ContextualMenu A11y Narrator Bug Fix

[gulnazsayed]

Platforms Impacted

• iOS
• macOS
• win32 (Office)
• windows
• android

Description of changes

Narrator should announce whether a ContextualMenu SubmenuItem is expanded or collapsed. According to accessibility guidelines, we need to specify accessibilityActions and onAccessibilityAction, as well as provide the expanded state in accessibilityState. To avoid extra overhead in SubmenuItem, I extended from PressablePropsExtended instead of IPressableProps to inherit all of the necessary accessibility props and follow the pattern found in other V1 components. Then, provided the default accessibilityActions to be merged with any custom actions the user might pass in.

Verification

Manually validated via the FURN tester that narrator announces the expanded/collapsed state of a nested submenu item when focused.

Pull request checklist

This PR has considered (when applicable):

• Automated Tests
• Documentation and examples
• Keyboard Accessibility
• Voiceover
• Internationalization and Right-to-left Layouts