Adjust ContextMenu animation
radar://107716428
*** Bug 257539 has been marked as a duplicate of this bug. ***
Pull request: https://github.com/WebKit/WebKit/pull/14572
Committed 264817@main (4ee917d5729a): <https://commits.webkit.org/264817@main> Reviewed commits have been landed. Closing PR #14572 and removing active labels.