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Show appender only when item has submenu #18153
Navigation menu items: Block appender should only be visible when the item already has a submenu.
Would love some a11y feedback on whether clicking the toolbar button should merely show/hide the appender, or if we should transfer focus to the appender, or announce its presence in any other way.
How has this been tested?
Tested in browser:
Types of changes
New feature (non-breaking change which adds functionality)