RFR: 8359257: Create accessibility protocol for TabGroup component [v2]

[Andy Goryachev]

On Thu, 12 Jun 2025 18:36:31 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

>> Create implementation of the TabGroup protocol and assign it to TAB_PANE and PAGINATION roles.
>
> Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixing indentation.

I see little difference between master and this PR:

Pagination:
- adds the word "group" when clicking on the radio button (e.g.: "You are currently on a selected radio button, **group**, 6 of 10)

TabPane:
- no difference in announcements

What am I doing wrong?

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PR Comment: https://git.openjdk.org/jfx/pull/1823#issuecomment-2967901083