Prevent flicker on PRIMARY_BOUNCER->LOCKSCREEN when dragging

The manual transition was sending 2 CANCELED events. One was
occuring in the FromLockscreenTransitionInteractor and the
second from the KeyguardTransitionRepository. There is no
need to send the first since it is well covered.

Fixes: 365885259
Test: atest FromLockscreenTransitionInteractorTest
Flag: com.android.systemui.migrate_clocks_to_blueprint
Change-Id: I7f9bdf07783dff1934592210a82a23e4902c4c67