Refine when to move live tile app below recents view

- We will still need to figure out why, but currently the overview scrim blocks the cut out during transition. To go around this, we need to move live tile app after the overview transition animation is over
- Some of the logic in RecentsView is no longer necessary since we are no longer reusing live tile params and simulator, but assign new targets each time

Fixes: 205587164
Test: manual
Change-Id: Icadf26182112bba544a4103b626effa37d4028b5