Don't reorder tasks if the recents animation is not running to home

- This fixes a regression from ag/15090191, in the case where there is
  a 3p launcher, then we don't want to ever move home to top

Bug: 140749967
Bug: 185643608
Test: FallbackRecentsTests#testOverview
Test: atest RecentsAnimationControllerTest
Change-Id: Iaab4a3431be9c33908c5c8b3354e793ec321389a