Keyboard Navigation fixes for enhanced quiz management

[marcellamaki]

Originally posted by @radinamatic in #12111 (comment)

Keyboard navigation issues

• When focusing to select the Edit section option and pressing Enter, the drop-down remains visible even after the side panel with Section settings is opened.

  

• When focusing the Change resources button, pressing Enter and selecting resources to perform the change, when the work in that side panel is completed, whether user presses the focused Save changes button, or they decide to abandon and focus the Back ⬅️ button, the focus should return to Change resources button that initiated that whole workflow. As of now, the Close ✖️ button in the upper right corner is focused Instead.

• By the same logic, if the Options button opens the Section settings, when that side panel is closed, the focus should return to the Options button.

• The Section order section inside Section settings 🙃 is not keyboard navigable: the focus jumps right over it and lands on the Delete section button.

  

• The 🔽 and 🔼 buttons to reorder questions by keyboard are focusable, but they do not work, nothing happens after pressing either Enter or Space. Not sure if that is because the whole accordion is not working in this asset...

[marcellamaki]

Between #12396 and some incidental fixes, this has been resolved. Radina will continue to do keyboard and accessibility testing and open new issues as needed