Use pending transaction for setting transform hint

This uses the proper transaction for [1].
Because the "t" could be sync transaction or start transaction
of transition, which will be applied by shell side that is too late.
Such as the app relayout before the transition starts, it will
still get old transform.

[1]: I6650eef0b12d84f7014e5afc280c1cb5e907d7b2

Bug: 270282500
Test: atest SurfaceControlTests#testSurfaceChangedOnRotation
Change-Id: Ib4a019bef270e33f76eec51220e758925dbb4c97