RFR: 8313424: JavaFX controls in the title bar (Preview) [v80]

[Markus Mack]

On Wed, 4 Jun 2025 14:48:31 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:
> 
>   enable preview feature system properties for tests

Changes look good, re-approving.

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Marked as reviewed by mmack (Author).

PR Review: https://git.openjdk.org/jfx/pull/1605#pullrequestreview-2898136002