Disables tracking focus on move a11y actions.

After a user perform a11y action, namely moving up/down/left/right, we
have to disable tracking focus functionality.

We refactor #onDrag to a more general term #onMove to cover any move
action which has to disable tracking focus functionality.

Bug: 218935435
Test: atest WindowMagnificationTest
      atest WindowMagnificationControllerTest
      atest WindowMagnificationManagerTest
Change-Id: I578b301645a08c71e874fe2f4fcf2557202abefd