Android Platform Views process MotionEvents in a complicated way:
1. MotionEvent is captured and delivered to
PlatformViewWrapper.onTouchEvent (TLHC) or
FlutterMutatorView.onTouchEvent (HC)
2. MotionEvent is transformed by the AndroidTouchProcessor into a
PointerEvent
3. AndroidTouchProcessor sends the PointerEvent over the
PlatformViewChannel
4. Framework processes the PointerEvent
5. Framework sends the PointerEvent over the PlatformViewChannel.
6. in PlatformViewsController.onTouch a new MotionEvent is synthesized
7. The MotionEvent is delivered to the platform view
After step (6) the MotionEvent will fail Verification
(`android.hardware.input.InputManager.verifyInputEvent`).
The fix requires that in step (6) we use the original motion event
delivered in step (1) instead of synthesizing a new instance.
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