InsetAnimationControlImpl: Copy SurfaceControl

This way the lifetime can be bound to the animation. Otherwise
the InsetController owns the lifetime, and it can be challenging
to synchronize the two (we would need to update all the running
animations when we rebuild the control list).

Bug: 150918857
Test: Existing tests pass
Change-Id: I86017b2eaee29ab0d8174479d187c9b7dd014305