WheelEventTestMonitor::ScrollableAreaIdentifier is a void*, but in scrolling tree code we know we're dealign with ScrollingNodeIDs, so just use them until we have convert.
<rdar://problem/103411823>
Pull request: https://github.com/WebKit/WebKit/pull/7710
Committed 257971@main (2e52daf4f7c4): <https://commits.webkit.org/257971@main> Reviewed commits have been landed. Closing PR #7710 and removing active labels.