Revisit accessibility solution in https://github.com/microsoft/AdaptiveCards/pull/6763#issuecomment-1171999511

[licanhua]

Revisit https://github.com/microsoft/AdaptiveCards/pull/6763#issuecomment-1171999511 @compulim

(I know not many people will read comments in merged/closed PRs. But I will just keep it here.)

IMO, role="toolbar" is a better role for grouping buttons. Some screen readers read "1 of 6" even without aria-posinset for things inside role="toolbar".

Turning a button into menu item hurts accessibility as shortcut keys that normally applies to buttons (and form fields) will no longer apply to menu item. Say, pressing B or F in Narrator will jump to the next closest button. However, it won't jump to button[role="menuitem"].

Buttons in toolbar are still buttons. Buttons in menu bar are no longer buttons. Better to stay as close to its original form as possible.

[beervoley]

@paulcam206 FYI