Update component styles that use `rounded` without size qualification.
The intent here was for a border radius that was larger than the
standard border-radius pattern. Tailwind default for `rounded` is 4px,
so this worked, but this breaks down if we want to change the pattern
default border radius. Update these to be explicit about radius size so
that we may set a default `rounded `value, and, in future, adjust it
without breaking styling on these components.