Allow components to render `null` or other non-element values.

This enables testing CFI-based focus filters and related functionality.

This was mostly straightforward except that the `cdn.hypothes.is` bucket resides
in us-east-1, which has a quirk with regards to determining the bucket region.

Fixes https://github.com/hypothesis/client/issues/5544

Creating realistic dummy content for a VS PDF page is quite involved, so each
page just re-uses the same content but with different metadata and a distinct
URL.

This fixes the S3 deployment script after migration to Commander v12.

See https://github.com/tj/commander.js/blob/master/CHANGELOG.md#migration-tips

Bumps [@hypothesis/frontend-shared](https://github.com/hypothesis/frontend-shared) from 7.2.0 to 7.3.0.
- [Release notes](https://github.com/hypothesis/frontend-shared/releases)
- [Changelog](https://github.com/hypothesis/frontend-shared/blob/main/docs/releases.md)
- [Commits](https://github.com/hypothesis/frontend-shared/compare/v7.2.0...v7.3.0)

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Bumps the sentry group with 2 updates: [@sentry/browser](https://github.com/getsentry/sentry-javascript) and [@sentry/cli](https://github.com/getsentry/sentry-cli).


Updates `@sentry/browser` from 7.98.0 to 7.99.0
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-javascript/compare/7.98.0...7.99.0)

Updates `@sentry/cli` from 2.26.0 to 2.27.0
- [Release notes](https://github.com/getsentry/sentry-cli/releases)
- [Changelog](https://github.com/getsentry/sentry-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-cli/compare/2.26.0...2.27.0)

---
updated-dependencies:
- dependency-name: "@sentry/browser"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: sentry
- dependency-name: "@sentry/cli"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: sentry
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Bumps [prettier](https://github.com/prettier/prettier) from 3.2.4 to 3.2.5.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/3.2.4...3.2.5)

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Bumps the eslint group with 2 updates: [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) and [@typescript-eslint/parser](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser).


Updates `@typescript-eslint/eslint-plugin` from 6.19.1 to 6.20.0
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v6.20.0/packages/eslint-plugin)

Updates `@typescript-eslint/parser` from 6.19.1 to 6.20.0
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/parser/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v6.20.0/packages/parser)

---
updated-dependencies:
- dependency-name: "@typescript-eslint/eslint-plugin"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: eslint
- dependency-name: "@typescript-eslint/parser"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: eslint
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Bumps [commander](https://github.com/tj/commander.js) from 11.1.0 to 12.0.0.
- [Release notes](https://github.com/tj/commander.js/releases)
- [Changelog](https://github.com/tj/commander.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tj/commander.js/compare/v11.1.0...v12.0.0)

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  dependency-type: direct:development
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Bumps [chai](https://github.com/chaijs/chai) from 5.0.0 to 5.0.3.
- [Release notes](https://github.com/chaijs/chai/releases)
- [Changelog](https://github.com/chaijs/chai/blob/main/History.md)
- [Commits](https://github.com/chaijs/chai/compare/v5.0.0...v5.0.3)

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  dependency-type: direct:development
  update-type: version-update:semver-patch
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Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1545.0 to 2.1550.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.1545.0...v2.1550.0)

---
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  dependency-type: direct:development
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Bumps [@npmcli/arborist](https://github.com/npm/cli/tree/HEAD/workspaces/arborist) from 7.3.0 to 7.3.1.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/workspaces/arborist/CHANGELOG.md)
- [Commits](https://github.com/npm/cli/commits/arborist-v7.3.1/workspaces/arborist)

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Refactor the banner container (`<hypothesis-banner>`) in the PDF viewer to work
more like other `<hypothesis->` UI elements with a controller class that uses
`PreactContainer` to create the element and render its contents.

This leaves just the `<hypothesis-sidebar>` as an exception which works
differently.

The various top-level Hypothesis UI elements in the annotator have a
common structure where:

 - There is a `<hypothesis-{name}>` container element

 - The container has a shadow root with the annotator stylesheet loaded
   into it

 - Preact is used to render the contents of the element, into the shadow
   root.

 - There is a controller which wraps the container element and has
   methods to read/write the displayed data. When the data is changed,
   the Preact tree is re-rendered.

Add a `PreactContainer` utility which implements common parts of this pattern,
and refactor two of the top-level UI controls (bucket bar and adder) to use it.

Use MessagePort's built-in `close` event to detect when the sending frame goes
away, instead of the sending window's `unload` event, which is being deprecated.

Currently only beta/dev versions of Chrome support the MessagePort `close`
event.

Fixes https://github.com/hypothesis/client/issues/5621

Extract the `TopBarToggleButton` component that causes the warning into
a separate module.

Revise the documentation in order to:

 - Reduce uninformative noise ("the X frame informs the Y frame to..."). The
   source and destination frame type are given by the type name.

 - Re-phrase the documentation to read more like either a function description
   or an event description, depending on whether the message is a specific
   command/request or a more general event.

 - Use the plural "guests" to make it clear that there can be more than one
   guest frame.

 - Clarify when events specific to third-party authorities are used.

Bumps the sentry group with 2 updates: [@sentry/browser](https://github.com/getsentry/sentry-javascript) and [@sentry/cli](https://github.com/getsentry/sentry-cli).


Updates `@sentry/browser` from 7.94.1 to 7.98.0
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-javascript/compare/7.94.1...7.98.0)

Updates `@sentry/cli` from 2.25.3 to 2.26.0
- [Release notes](https://github.com/getsentry/sentry-cli/releases)
- [Changelog](https://github.com/getsentry/sentry-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-cli/compare/2.25.3...2.26.0)

---
updated-dependencies:
- dependency-name: "@sentry/browser"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: sentry
- dependency-name: "@sentry/cli"
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: sentry
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Signed-off-by: dependabot[bot] <support@github.com>

Bumps the eslint group with 2 updates: [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) and [@typescript-eslint/parser](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser).


Updates `@typescript-eslint/eslint-plugin` from 6.19.0 to 6.19.1
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v6.19.1/packages/eslint-plugin)

Updates `@typescript-eslint/parser` from 6.19.0 to 6.19.1
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/parser/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v6.19.1/packages/parser)

---
updated-dependencies:
- dependency-name: "@typescript-eslint/eslint-plugin"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: eslint
- dependency-name: "@typescript-eslint/parser"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: eslint
...
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Bumps the babel group with 2 updates: [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) and [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env).


Updates `@babel/core` from 7.23.7 to 7.23.9
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.23.9/packages/babel-core)

Updates `@babel/preset-env` from 7.23.8 to 7.23.9
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.23.9/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/core"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: babel
- dependency-name: "@babel/preset-env"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: babel
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Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1540.0 to 2.1545.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.1540.0...v2.1545.0)

---
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  dependency-type: direct:development
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Keep only the replacement "release-staging" step instead.

The `CloseButton` component in @hypothesis/frontend-shared has styling that
makes it taller (44px) on touch devices, but the `Tab` component does not. Items
in the `TabHeader` are centered on the cross axis, so on mobile, the close
button became taller than the tabs and detached them from the tab panel.

An alternative way to fix this would be to make tabs also grow in height on
touch devices, but they are quite usable without.

Fixes https://github.com/hypothesis/client/issues/6131

Prevent the filter toggle button row from overflowing the containing panel by
wrapping onto multiple lines if needed, and truncate long labels within
individual toggle buttons if needed.

Fixes https://github.com/hypothesis/client/issues/6140

Remove the `search_panel` feature flag tests and old search UI.

This fixes an issue on smaller iOS devices (eg. iPhone) where the browser zooms
in when an input field with < 16px font size is tapped. This change ought to be
applied to the `Input` component in the pattern library, but until then, apply
it to input fields in the client.

This change was taken from the `MarkdownEditor` component.