- In the project header, arrow keys left and right expand/collapse the
group
- Enter and space in any thread list item selects the item
- Arrow key down from the search editor moves focus to the the list
- Arrow key up from the first list item puts focus back to the editor
- At any moment while focus on the list, cmd-f moves focus back to the
search editor
- Made the `FocusWorkspaceSidebar` action always reset focus back to the
search editor

Release Notes:

- N/A