When transitioning between states, TouchInteractionController will queue motion events and not deliver them until the state transition has been confirmed.
This avoids the case where a service will request a state transition twice because it processes a motion event after sending the transition request but before the transition completes.
Bug: 159651900
Test: atest TouchInteractionControllerTest
Change-Id: I2437b635a8053de28212d93e67c7144134c1dc08
0e96bcf1d5