[jfx21u] RFR: 8310681: Update WebKit to 616.1

Fri Jul 28 13:28:29 UTC 2023

Backport of webkit update to v616.1. Clean Backport

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Commit messages:
 - Backport 2dc699a8661fb23040c9f8e3905713229e615816

Changes: https://git.openjdk.org/jfx21u/pull/3/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx21u&pr=3&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310681
  Stats: 381300 lines in 5888 files changed: 214309 ins; 124154 del; 42837 mod
  Patch: https://git.openjdk.org/jfx21u/pull/3.diff
  Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/3/head:pull/3

PR: https://git.openjdk.org/jfx21u/pull/3