Adjust icon placement

Adjust icon placement per feedback in
https://github.com/hypothesis/client/pull/6130#pullrequestreview-1838479102.

src/sidebar/components/search/SearchField.tsx

@@ -90,7 +90,7 @@ export default function SearchField({
         <IconButton
           // Vertically center icon on left side of input. Increase the text
           // size to make the icon the same size as the top bar icons.
-          classes="absolute left-1 text-[16px] top-[50%] translate-y-[-50%]"
+          classes="absolute left-0 text-[16px] top-[50%] translate-y-[-50%]"
           icon={SearchIcon}
           size="lg"
           title="Search"
@@ -100,7 +100,7 @@ export default function SearchField({
         <Input
           aria-label="Search annotations"
           classes={classnames(
-            'pl-9 pr-9', // Add padding so input does not overlap search/clear buttons.
+            'pl-8 pr-8', // Add padding so input does not overlap search/clear buttons.
             'disabled:text-grey-6', // Dim text when input is disabled
           )}
           data-testid="search-input"
@@ -117,7 +117,7 @@ export default function SearchField({
         />
         {pendingQuery && (
           <IconButton
-            classes="absolute right-1 text-[16px] top-[50%] translate-y-[-50%]"
+            classes="absolute right-0 text-[16px] top-[50%] translate-y-[-50%]"
             size="lg"
             icon={CancelIcon}
             data-testid="clear-button"