RFR: 8378383: Create release notes for JavaFX 26

[Kevin Rushforth]

On Thu, 26 Feb 2026 15:47:02 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This PR adds the release notes for the JavaFX 26 release. This will first go into master, and then be backported to the jfx26 branch so it will be available in that branch when JavaFX 26 is published (and from there also synced into the jfx26u repo).
> 
> The following filter was used to produce the list of issues fixed in JavaFX 26:
> 
> https://bugs.openjdk.org/issues/?filter=49209
> 
> Additionally, we had three issues with a `release-note=yes` label, which are included in the list of important changes, etc.

Reviewers: Some combination of @abhinayagarwal @johanvos @andy-goryachev-oracle @arapte

This should be the final version, since RDP2 has ended and we have tagged the repo for the first RC build.

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PR Comment: https://git.openjdk.org/jfx/pull/2090#issuecomment-3967968292