joedolson 53a0d9e498 Administration: A11y: Add role="alert" on JS injected admin notices.
Add the attribute `role="alert"` on 12 instances of admin notices that are injected into the DOM using JavaScript. The `role="alert"` attribute allows screen readers to recognize the addition to the DOM and announce the errors to users.

Props afercia, cyrus11, rcreators, joedolson.
Fixes #47111.
Built from https://develop.svn.wordpress.org/trunk@58455


git-svn-id: http://core.svn.wordpress.org/trunk@57904 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2024-06-21 18:17:14 +00:00
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