[jfx26u] RFR: 8368572: Update WebKit to 623.1

[Hima Bindu Meda]

clean Backport

-------------

Commit messages:
 - Backport 422d3a954d531c9cca32b1401b5937b05b1b07fa

Changes: https://git.openjdk.org/jfx26u/pull/3/files
  Webrev: Webrev is not available because diff is too large
  Issue: https://bugs.openjdk.org/browse/JDK-8368572
  Stats: 505662 lines in 8991 files changed: 253929 ins; 188948 del; 62785 mod
  Patch: https://git.openjdk.org/jfx26u/pull/3.diff
  Fetch: git fetch https://git.openjdk.org/jfx26u.git pull/3/head:pull/3

PR: https://git.openjdk.org/jfx26u/pull/3