RFR: 8313424: JavaFX controls in the title bar (Preview) [v86]

[Andy Goryachev]

On Thu, 12 Jun 2025 21:53:33 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> Implementation of [`StageStyle.EXTENDED`](https://gist.github.com/mstr2/0befc541ee7297b6db2865cc5e4dbd09).
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add the same fix in childVisibilityChanged

Marked as reviewed by angorya (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1605#pullrequestreview-2922841427