Tightening up rotation behavior for PIP (3/3)

- Fixing up edge case when SysUI resizing conflicts with updating the
  display rotation bounds.  When an interaction causes both a display
  rotation and a resize from SystemUI, we should defer the resize animation
  until the rotation has been propagated to SystemUI, otherwise the bounds
  used will be incorrect.

Bug: 36879891
Test: android.server.cts.ActivityManagerPinnedStackTests
Change-Id: Ife1b7ab0c2f1f11f33cbc9614778ff49a28c79f6