RFR: 8324941: POC for Headless platform for JavaFX [v2]

[Johan Vos]

On Thu, 19 Jun 2025 22:49:58 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

> My testing shows that the headless platform works as expected.
> 
> Some general comments:
> 
> 1. All files need a copyright header.
> 2. Very long lines can benefit from a few line breaks.

Thanks for the comments, those make the PR much cleaner!
I addressed most of them. There are a few comments I didn't address yet (e.g. about fields that are assigned but never read) because there might be follow-up reviews that require those values to be readable.

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PR Comment: https://git.openjdk.org/jfx/pull/1836#issuecomment-2995431449