Cancel existing recents animations if a no-op transitition is detected

- This is not ideal behavior, but prevents a worse case where gesture
  nav is stuck due to an orphan recents animation runner not getting
  any callbacks.
- Also tweak logs to print controller instance

Bug: 275561141
Test: Quickswitch and swipe up repeatedly
Change-Id: Iea074fffe4d1b7442a2a3b1304fb727adf4fda68