We can use HandleMouseEventResult for events besides mouse events, so we should rename it.
<rdar://problem/118356847>
Pull request: https://github.com/WebKit/WebKit/pull/20444
Committed 270682@main (a8e899addac5): <https://commits.webkit.org/270682@main> Reviewed commits have been landed. Closing PR #20444 and removing active labels.