RFR: 8313424: JavaFX controls in the title bar (Preview) [v83]

[Kevin Rushforth]

On Tue, 10 Jun 2025 02:51:34 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:
> 
>   only dispose ViewSceneOverlay when non-null

Headful tests passed.

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Marked as reviewed by kcr (Lead).

PR Review: https://git.openjdk.org/jfx/pull/1605#pullrequestreview-2914629768