Place recents above app only after the initial touch down

The problem is that currently upon touch down we place recents above app, before recents view is visible, so instead home screen is revealed.

Here is the breakdown:
Initial touch down -> app on top
First move event -> updateFinalShift -> recents on top
End target = home -> app on top

Fixes: 175423704
Test: manual
Change-Id: I81a4fea34c983ac2e6921f4e3515ef3193201069