Transitions - Handle cancel of bouncer swipe

When swipe up is followed by a swipe down, issue a call to cancel the
current transition and then immediately go back to the prior
state. This was impacting dream transitions.

Test: atest KeyguardTransitionRepositoryTest
Bug: 260637747
Change-Id: I6509e0377e58971c09ddd0ee971c31fce615e542
4 files changed