Preparation for selecting a bubble for an ongoing transition

- Notify remote transitions that they are consumed when handling a
  transition in default-mixed, otherwise the caller (ie. Launcher) may
  not clean up state accordingly
- Add another listener callback for when an existing already-initialized
  taskview's surface is created.  This ensures that transtiions that
  route to existing bubbles will get the same signals to unblock the
  transition-gates for continuing the animation
- Skip throwing an exception if a caller attemps to register the same
  task listener, this can happen if a transition resolves to an existing
  task, and can just be a no-op

Bug: 416136909
Flag: com.android.wm.shell.enable_create_any_bubble
Test: atest WMShellUnitTests

Change-Id: I38c08ad39cd7ec62c52296ddad6b092082d85041
Signed-off-by: Winson Chung <winsonc@google.com>