Change Details

### Description Echo uses OOUI popup widgets for the "Alerts" and "Notices" overlays that are opened by notification icons in the person menu. Because the popup widgets are inserted at the end of the page, the only way they can be accessed by users using assistive tech is to tab through to the end of the document. ### Expected behavior Users should be able to tab into either the "Alerts" and "Notices" overlays after opening them via the notification icons. ### Developer Notes One possible solution is to implement a focus trap, and essentially treat the overlays similarly to OOUI dialogs.