Fix minor issues with new window animations.

- Fix screen rotation anim by pulling it back to DC.
- Fix surface insets by correcting at WindowState.prepareSurfaces,
and then going into the other direction in the WSA.

Test: Open PopupWindow, observe shadow is not clipping
Test: Rotate screen, ensure the animation is correct
Test: go/wm-smoke
Bug: 64674361
Change-Id: I0e0910a72aa5f06b86d4e90061e4f807fb164316