Update the home stack bounds with the transition end points

- When the user dismisses splitscreen while launcher is hidden and was
  previously minimized, getLocationOnScreen() will continue to return
  the old position until the first view root traversal after the window
  is shown.  As a result, we will end up with home bounds for the minimized
  state and the wrong target bounds calculated

Bug: 135952890
Test: Enter splitscreen, launcher another app, dismiss splitscreen and then
      swipe up

Change-Id: Id19dfa664623b2b855db4209999508c76a9aacdc