[jfx11u] RFR: 8278980: Update WebKit to 613.1

[Ambarish Rapte]

On Mon, 28 Feb 2022 16:46:36 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Nearly clean backport to `jfx11u` (the only conflict was in the copyright years in one of the unit tests). I tested this along with the other VS 2019 and WebKit 613.1 fixes together in the `test-kcr-11.0.15` branch.

Verified that the backport is clean. and there was no diff except copyright year.

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PR: https://git.openjdk.java.net/jfx11u/pull/77