RFR: 8292609 : Cherry-pick WebKit 614.1 stabilization fixes

[Kevin Rushforth]

On Fri, 26 Aug 2022 11:51:04 GMT, Hima Bindu Meda <hmeda at openjdk.org> wrote:

> Stabilization fixes from WebKitGTK 2.36.7.
> Verified drt and unit tests on Mac, Windows and Linux platforms.

All my testing looks good. The code changes look good.

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Marked as reviewed by kcr (Lead).

PR: https://git.openjdk.org/jfx/pull/885