Cherry-pick f64be53. rdar://114720841

    [iOS] REGRESSION(268041@main): Unable to scroll Twitch.tv with touch atop video area
    https://bugs.webkit.org/show_bug.cgi?id=261950
    rdar://115850939

    Reviewed by Simon Fraser.

    Views which conform to WKNativelyInteractible (like WKModelView and WKSegmentedModelView) get special treatment inside `-_web_findDescendantViewAtPoint:`, so that touch events can be handled directly by the view itself. WKVideoView doesn't actually need to handle touch events directly, so it should just be a normal subclass of WKCompositingView.

    * Source/WebKit/UIProcess/ios/WKVideoView.h:

    Canonical link: https://commits.webkit.org/268331@main
Identifier: 265870.605@safari-7616.2.9.10-branch

Source/WebKit/UIProcess/ios/WKVideoView.h

@@ -29,7 +29,7 @@
 
 #import "RemoteLayerTreeViews.h"
 
-@interface WKVideoView : WKCompositingView <WKNativelyInteractible>
+@interface WKVideoView : WKCompositingView
 @end
 
 #endif