[jfx21u] RFR: 8356982: Update WebKit to 622.1

Fri Sep 5 20:09:31 UTC 2025

Hi all,

This pull request contains a backport of commit [4a8f3abc](https://github.com/openjdk/jfx/commit/4a8f3abc8ee665d1702df8d0bd63e9f663207ff1) from the [openjdk/jfx](https://git.openjdk.org/jfx) repository.

The commit being backported was authored by Hima Bindu Meda on 13 Aug 2025 and was reviewed by Joeri Sykora and Kevin Rushforth.

Thanks!

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Commit messages:
 - Backport 4a8f3abc8ee665d1702df8d0bd63e9f663207ff1

Changes: https://git.openjdk.org/jfx21u/pull/102/files
  Webrev: Webrev is not available because diff is too large
  Issue: https://bugs.openjdk.org/browse/JDK-8356982
  Stats: 725644 lines in 8650 files changed: 284002 ins; 364224 del; 77418 mod
  Patch: https://git.openjdk.org/jfx21u/pull/102.diff
  Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/102/head:pull/102

PR: https://git.openjdk.org/jfx21u/pull/102