#1744 Fix Restart conversation menu

[corinagum]

#1750

This PR tweaks the "Restart conversation" menu items in the chat view.

Please note: this component has been updated from 'listbox' role to 'menu' role.

Semantically, the behavior we want to emulate more closely matches the menu bar. For an accessible example, please see w3.org menubar2

This fix returns focus to the caret (next to Restart conversation button) after an action has been selected from the submenu.

Below is the transcribed behavior when navigating the toolbar that contains Restart Conversation.

• Focus jumps to "Restart conversation" button
  • NVDA says: "Restart conversation 1 of 3"
• Tab : NVDA says: "Restart conversation submenu 2 of 3"
• Tab : NVDA says: "Save transcript"

When focused on "Restart conversation menu":
Enter : NVDA says: "Restart with new user ID 1 of 2"
↓ : NVDA says "Restart with same user ID 2 of 2"
Enter : NVDA says "Restart conversation submenu 2 of 3"

Below is an animated gif of the behavior using keyboard navigation.

[coveralls]

Coverage increased (+0.002%) to 65.77% when pulling f1f8d23 on corinagum/1744 into 57bf5b6 on master.

[compulim]

We go back-and-forth, then back-and-forth again. Almost rewrote it. But we finally figured out it should be role="menu" than role="listbox". 🤣

So many work and think process, so little showing in this PR.

[tonyanziano]

Good work!

Fix the changelog conflict and I'll merge it in once CI passes.

[tonyanziano]

👍