[jfx17u] RFR: 8310681: Update WebKit to 616.1

[Johan Vos]

Almost clean backport for
8310681: Update WebKit to 616.1
Reviewed-by: kcr, sykora

The only manual change was changing the (c) year in the removed graphics/java/FontCustomPlatformData.h fil

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Commit messages:
 - 8310681: Update WebKit to 616.1

Changes: https://git.openjdk.org/jfx17u/pull/140/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=140&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/jfx17u/pull/140.diff
  Fetch: git fetch https://git.openjdk.org/jfx17u.git pull/140/head:pull/140

PR: https://git.openjdk.org/jfx17u/pull/140