RFR: 8367578: Additional WebKit 622.1 fixes from WebKitGTK 2.48.7

[Kevin Rushforth]

On Thu, 9 Oct 2025 03:21:20 GMT, Jay Bhaskar <jbhaskar at openjdk.org> wrote:

> WebKitGTK 2.48.6 and 2.48.7 are bug-fix releases that improve stability, fix crashes, memory leaks, emoji rendering, WebP animation stuttering, and CSS animation issues, while also adding better font support and preventing unnecessary memory monitoring.

@tiainen This is a fairly small update to WebKit. Do you want to do a test build before we integrate it? If not, that's OK.

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PR Comment: https://git.openjdk.org/jfx/pull/1933#issuecomment-3385587532