RFR: Merge jfx18

[Kevin Rushforth]

Final merge of `jfx18` into `master`.

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Commit messages:
 - Merge jfx18
 - 8282766: Create release notes for JavaFX 18

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.java.net/jfx/pull/755/files
  Stats: 110 lines in 1 file changed: 110 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/755.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/755/head:pull/755

PR: https://git.openjdk.java.net/jfx/pull/755