This test checks the behavior of the ariaNotify API when used within an iframe with aria-notify explicitly denied by permissions policy.
Setup: Use a screen reader (NVDA, JAWS, VoiceOver, etc.) or other assistive technology that supports the ARIA Notify API.
Instructions: Listen for the announced text from your screen reader. The test will run automatically when the page loads.
Expected: Screen reader should NOT announce: "This should not be announced".