RFR: 8268849: Update to 612.1 version of WebKit [v2]

[Ambarish Rapte]

> Update JavaFX WebKit to GTK WebKit 2.32 (612.1).
> There are two separate commits:
> 1. [commit](https://github.com/openjdk/jfx/commit/ed0baf5f23aed0d8aaa72645c8e03fde56d0f0cc) : includes only native changes
> 2. [commit](https://github.com/openjdk/jfx/commit/b024c16551be7d929fa1d927d3be8f0fc75a64c3) : includes non native changes
> 
> This is change is targeted for JavaFX 18, shall be integrated after fork.

Ambarish Rapte has updated the pull request incrementally with two additional commits since the last revision:

 - remove unwanted file
 - comment failing test code

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

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/560/files
  - new: https://git.openjdk.java.net/jfx/pull/560/files/b024c165..8b4c1705

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=560&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=560&range=00-01

  Stats: 40 lines in 2 files changed: 40 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/560.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/560/head:pull/560

PR: https://git.openjdk.java.net/jfx/pull/560