For the threaded animation resolution work we will use the `RemoteLayerTreeEventDispatcher` member of `RemoteScrollingCoordinatorProxyMac` for purposes beyond wheel events, so we should rename the variable from `m_wheelEventDispatcher` to something more generic.
<rdar://problem/119269904>
Pull request: https://github.com/WebKit/WebKit/pull/21408
Committed 271661@main (b03871bf9700): <https://commits.webkit.org/271661@main> Reviewed commits have been landed. Closing PR #21408 and removing active labels.