[jfx21u] RFR: 8367578: Additional WebKit 622.1 fixes from WebKitGTK 2.48.7

[Johan Vos]

To protect against unauthorized use of the Oracle email brand, we will be implementing a strict DMARC policy as part of our email security. DMARC (Domain-based Message Authentication, Reporting and Conformance) will help protect against phishing attacks, spam campaigns, and other malicious activities. 

With this implementation, emails sent on behalf of ANY Oracle owned domain will be restricted if they fail DMARC compliance. 

DMARC Info : 
Record= v=DMARC1;p=none;rua=mailto:dmarc_rua at emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf at emaildefense.proofpoint.com;fo=1
Result= none

Questions and more information:

* You may need to take action if you're responsible for email flow from Oracle Cloud, OCI, or acquisition domains. Senders in this category are treated as external emails since they operate outside of Oracle's internal network.

* If you are using the OCI Email Delivery Service, ensure you generate DKIM for your related Header From Domain - refer to https://docs.oracle.com/en-us/iaas/Content/Email/Tasks/configuredkim.htm more info can be found here https://confluence.oraclecorp.com/confluence/display/EMAIL/DMARC+for+Oracle+IT+and+Email+Delivery+Frequently+Asked+Questions

* Refer to the DMARC FAQ https://confluence.oraclecorp.com/confluence/display/OITGLOBAL/DMARC+Global+FAQ to learn more about DMARC, if your emails may be affected, and actions you need to take.

* If you have questions, reach out to the #oracle-owned-domains-dmarc Slack channel.

Thank you in advance for your attention to this matter.

Hi all,

This pull request contains a backport of commit [adb6c11e](https://github.com/openjdk/jfx/commit/adb6c11e34c6e08e158e8a9ec6aa769ad9de9a4e) from the [openjdk/jfx](https://git.openjdk.org/jfx) repository.

The commit being backported was authored by Jay Bhaskar on 13 Oct 2025 and was reviewed by Kevin Rushforth and Joeri Sykora.

Thanks!

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

Commit messages:
 - Backport adb6c11e34c6e08e158e8a9ec6aa769ad9de9a4e

Changes: https://git.openjdk.org/jfx21u/pull/110/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx21u&pr=110&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367578
  Stats: 233 lines in 41 files changed: 141 ins; 36 del; 56 mod
  Patch: https://git.openjdk.org/jfx21u/pull/110.diff
  Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/110/head:pull/110

PR: https://git.openjdk.org/jfx21u/pull/110