VoiceOver focus management not working on iOS with popover

[dpersing]

Issue summary

When using VoiceOver with Safari (or Chrome) on iOS, focus does not go to the popover when it opens. See the use case described in #2255.

Expected behavior

When a button that displays a popover is activated, focus will go to the popover.

Actual behavior

Focus stays "under" the popover, and swiping to move the cursor causes VoiceOver focus to move to the next element in the DOM, not the popover.

Specifications

• Are you using the React components? (Y/N): Y
• Polaris version number: 4+
• Browser: Safari and Chrome
• Device: iPhone
• Operating System: iOS 13+

[alex-page]

This shipped! Thank you @dpersing