[WinCairo] Disable legacy WebKit
Pull request: https://github.com/WebKit/WebKit/pull/9996
Committed 260172@main (1ebb3a9a9ed1): <https://commits.webkit.org/260172@main> Reviewed commits have been landed. Closing PR #9996 and removing active labels.
*** Bug 194905 has been marked as a duplicate of this bug. ***