Revert "Use SOURCE_CLASS_POINTER as the default source for MotionEvent"

This reverts commit b1d3e076af1d86cf72678cd15ec2ebc808805c9a.

Reason for revert: Breaking CarUiRecyclerViewTest#testThumbDragToCenter tests

Bug: 211051185
Bug: 211051850
Bug: 213425347

Change-Id: Ia8e5c2301ab389a4e9b436165157f8918d285649
2 files changed