Improve Comments accessibility #192377
Description
- Indicate when a document has commentable ranges
- Aria status when a document is opened
- Add keyboard shortcut for adding a comment
- Provide commands to go to next and previous commentable range
- Add an accessible help menu to the comment widget
- Esc dismisses widget
- Lists go to next/previous commentable range commands + keyboard shortcuts
- Lists command and keyboard shortcut to add a comment
- Lists keyboard shortcut to execute the comment primary action and what the primary action is
- The Comments view should respect the enter/space = reveal+focus/reveal
- Make the comment widget toolbar always visible when in screen reader mode