TinyMCE, inline link:

- Add `uiAutocompleteL10n` with translatable strings for use in UI Autocomplete live region.
- Use the above strings in both the editor plugin and wplink.js.

See #33301.
Built from https://develop.svn.wordpress.org/trunk@36806


git-svn-id: https://core.svn.wordpress.org/trunk@36773 1a063a9b-81f0-0310-95a4-ce76da25c4cd