RFR: 8348936: [Accessibility,macOS,VoiceOver] VoiceOver doesn't announce untick on toggling the checkbox with "space" key on macOS

[Victor Dyakov]

On Tue, 4 Feb 2025 10:58:20 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

> VoiceOver doesn't announce the _untick state_ when Checkbox is `deselected` using **space** key. When CheckBox is deselected, the state change is not notified to a11y client (VoiceOver) and so the state is not announced by VO. 
> 
> Screen Magnifier is also unable to magnify the unchecked state of JCheckBox due to same reason and is captured as separate bug [JDK-8345728](https://bugs.openjdk.org/browse/JDK-8345728).
> 
> Proposed fix is to send the state change notification to a11y client when checkbox is deselected, this resolves the problem for VoiceOver and Screen Magnifier.
> 
> Similar issue observed for JToggleButton. So, I extended the fix for JToggleButton as well.
> 
> The proposed change can be verified the manual test in the PR.
> 
> CI pipeline testing is `OK`, link posted in JBS.

@azuev-java please review

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PR Comment: https://git.openjdk.org/jdk/pull/23436#issuecomment-2634593432