Use HysteresisActivity to avoid starting/stopping the display link in quick succession. This will bridge the gap over laggy wheel events.
<rdar://problem/105935338>
Pull request: https://github.com/WebKit/WebKit/pull/10691
Committed 260854@main (390d437355c6): <https://commits.webkit.org/260854@main> Reviewed commits have been landed. Closing PR #10691 and removing active labels.