[wp-trac] [WordPress Trac] #43095: Audit the usage of `aria-haspopup` in the admin menu

[WordPress Trac]

#43095: Audit the usage of `aria-haspopup` in the admin menu
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 Reporter:  afercia         |       Owner:  joedolson
     Type:  defect (bug)    |      Status:  accepted
 Priority:  normal          |   Milestone:  6.6
Component:  Administration  |     Version:
 Severity:  normal          |  Resolution:
 Keywords:  has-patch       |     Focuses:  ui, accessibility
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Changes (by afercia):

 * Attachment "default.png" added.

 Default menu: the submenu fly-outs open automatically when tabbing and
 when arrowing with a screen reader. No need to announce there is a popup.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43095>
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