Try to detect and handle delayed quickswitch task launch failure

- The main issue arises when a task is successfully launched from
  overview, but the activity later finishes (ie. during resume) which
  prevents the usual logic of resetting Launcher to a good state
  (ie. it can get stuck in overview with a blank or empty snapshot)

  In this case, the Launch will "succeed" so that onTaskLaunchFailed
  is not called, but then also silently fail (launched task finishes
  and Launcher is again resumed) before Launcher stops, which does the
  usual resetting of the state back to normal state after quickswitching.

  This change checks for this case by listening for the activity and
  transition state, and in the case where Launcher has not been stopped
  or is resumed again after the transition finishes, returns the
  user to the default home state.

  This primarily only affects quickswitch for now, as other launch
  failures leave the user in a valid state (ie. overview) while this
  issue will leave the user in background state while quickswitching.

Bug: 268448123
Test: Quickswitch to an activity that finishes when resumed
Change-Id: I7d554f8fd521f7bc480dc06930ad91eeef0f1a1a