PIP: Fix regressions caused by previous commit a0d4d258

This includes two fixes
- Restore PIP location when PIP menu is closed.
- Prevent PIP from moving to fullscreen when it's resized directly
  via ActivityManager with animation.

These are regressions caused by
a0d4d258 PIP: Apply the animation spec for the PIP in Recents

Bug: 27540465
Change-Id: Id5b131faa3052a809138ab058bcfe65ce6a820b7