Fix qsb when flinging to home during gesture to overview from home

- AllAppsTransitionController should not animate alphas for atomic
  components even when failing fast (we already had this check for
  the normal flow where mProgress != targetProgress).
- Don't set state to NORMAL until both the workspace stagger anim
  and overview peek anim are finished

Test: swipe up and hold from the nav bar on the home screen, then,
without lifting finger, fling upwards to return home; ensure qsb
springs in staggered formation with rest of workspace, and alpha
matches accordingly

Bug: 154637581
Change-Id: Iafeaeac50ee8bce05492628d443c3ca4ab3d26df