RFR: 8361379: [macos] Refactor accessibility code to retrieve attribute by name

[Victor Dyakov]

On Thu, 3 Jul 2025 22:17:01 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

> - Copyright year update;
> - Introduce new function requestNodeAttribute and refactor code to use it;
> - Fix some typos;
> - Enable new code to handle TabPages since TabGroup was implemented;

@andy-goryachev-oracle @arapte please review

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PR Comment: https://git.openjdk.org/jfx/pull/1840#issuecomment-3049844834