As of ToT, every PointerEvent object created from a backing MouseEvent object in PointerCaptureController has an incorrect pressure value, namely 0. This causes us to fail the pointerevents/pointerevent_attributes_hoverable_pointers.html WPT because it makes assertions about the pressure property.
<rdar://problem/116094696>
Pull request: https://github.com/WebKit/WebKit/pull/18268
Committed 268552@main (a13dcf305bd1): <https://commits.webkit.org/268552@main> Reviewed commits have been landed. Closing PR #18268 and removing active labels.