[jfx21u] RFR: 8368572: Update WebKit to 623.1 [v2]

[Jose Pereda]

On Fri, 27 Feb 2026 13:20:14 GMT, Johan Vos <jvos at openjdk.org> wrote:

>> Hi all,
>> 
>> This pull request contains a backport of commit [422d3a95](https://github.com/openjdk/jfx/commit/422d3a954d531c9cca32b1401b5937b05b1b07fa) from the [openjdk/jfx](https://git.openjdk.org/jfx) repository.
>> 
>> The commit being backported was authored by Hima Bindu Meda on 21 Jan 2026 and was reviewed by Kevin Rushforth, Joeri Sykora and Johan Vos.
>> 
>> Thanks!
>
> Johan Vos has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Adapt tests to junit 4 API

Marked as reviewed by jpereda (Reviewer).

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PR Review: https://git.openjdk.org/jfx21u/pull/116#pullrequestreview-3866917151