RFR: 8278980: Update WebKit to 613.1 [v2]

[Ajit Ghaisas]

On Wed, 2 Feb 2022 15:29:51 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

>> Update JavaFX WebKit to GTK WebKit 2.34 (613.1).
>> 
>> Verified the updated version build, tests run and sanity testing.
>> This does not cause any issues except a unit test failure `IrresponsiveScriptTest`.
>> It is recorded and ignored using [JDK-8280421](https://bugs.openjdk.java.net/browse/JDK-8280421)
>
> Ambarish Rapte has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Restore commits that were mistakenly reverted.
>   
>   8279013: ES2Pipeline fails to detect AMD vega20 graphics card
>   8277853: With Touch enabled devices scrollbar disappears and the table is scrolled to the beginning
>   8277122: SplitPane divider drag can hang the layout

Marked as reviewed by aghaisas (Reviewer).

I have tested on macOS and Windows. No new issue observed.

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PR: https://git.openjdk.java.net/jfx/pull/723