Fix taskbarIconAlignment not being part of animToLauncher

Previous sequence of events when swiping home:
- AbsSwipeUpHandler getParallelAnimationToLauncher() ->
  TaskbarLauncherStateController#createAnimToLauncher(NORMAL, ...)
  (but mLauncherState is still BACKGROUND_APP, so we don't play the
  icon alignment anim here)
- AbsSwipeUpHandler#createWindowAnimationToHome ->
  LauncherHomeAnimationFactory#createActivityAnimationToHome() sets the
  state to NORMAL.
- TaskbarLauncherStateController now animates the icon alignment in
  response to the state change, but it's a separate animation from the
  one created in createAnimToLauncher()
- If you touch down during the transition to home, we finish the
  animation that was returned by createAnimToLauncher(), but that
  doesn't include iconAlignment so that part still plays on top

To fix this, we set mLauncherState = toState in createAnimToLauncher so
that the applyState picks it up and does the iconAlignment as part of
that animation.

Test: manual: swipe to home and immediately swipe up to All Apps (or
down for notifications or right for -1), verify no Taskbar on top
Flag: EXEMPT bugfix
Fixes: 360116367

Change-Id: Icd9e4659812c9d77598b9214f51592ce2136b265