Use transform in pointerCoordsFromNative and not just offset

The raw pointer coords are purely raw coordinates in screen space. They
do not include any transformation. Therefore, we need to use the
transform object and not just offset values to calculate the transformed
coordinates.

Test: MotionEventTest#testTransformShouldApplyMatrixToPointsAndPreserveRawPosition
Fixes: 162446411
Change-Id: Idd4c10f0ff5243006a6240558f6b12cf139b455d