[jfx19] RFR: 8300523: Create release notes for 19.0.2

[Abhinay Agarwal]

Add release notes for JavaFX 19.0.2 to the repository

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Commit messages:
 - 8300523: Create release notes for 19.0.2

Changes: https://git.openjdk.org/jfx/pull/1000/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1000&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8300523
  Stats: 27 lines in 1 file changed: 27 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1000.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/1000/head:pull/1000

PR: https://git.openjdk.org/jfx/pull/1000