RFR: Merge jfx20

Tue Jan 17 19:42:33 UTC 2023

Merge `jfx20` branch into `master`.

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Commit messages:
 - Merge jfx20
 - Merge
 - 8299628: BMP top-down images fail to load after JDK-8289336
 - Merge
 - Merge
 - Merge
 - Merge
 - 8294779: Improve FX pages
 - 8289336: Better platform image support
 - Merge
 - ... and 4 more: https://git.openjdk.org/jfx/compare/23004367...d64b546a

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

Changes: https://git.openjdk.org/jfx/pull/998/files
  Stats: 362 lines in 19 files changed: 301 ins; 7 del; 54 mod
  Patch: https://git.openjdk.org/jfx/pull/998.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/998/head:pull/998

PR: https://git.openjdk.org/jfx/pull/998