[jfx17u] RFR: 8274107: Cherry pick GTK WebKit 2.32.4 changes

[Kevin Rushforth]

Clean backport to `jfx17u` of WebKit GTK 2.32.4 fixes.

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Commit messages:
 - 8274107: Cherry pick GTK WebKit 2.32.4 changes

Changes: https://git.openjdk.java.net/jfx17u/pull/13/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx17u&pr=13&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274107
  Stats: 1811 lines in 131 files changed: 1043 ins; 205 del; 563 mod
  Patch: https://git.openjdk.java.net/jfx17u/pull/13.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx17u pull/13/head:pull/13

PR: https://git.openjdk.java.net/jfx17u/pull/13