Ensure to reset seamless transform after transition

If the start transaction of rotation transition is committed
after transition timeout, the unrotate transform will be applied
after resetting transform for timeout. That will cause the
surfaces of seamless windows (e.g. cutout or button bar) to show
in wrong rotation. So by using sync transaction, the sync engine
can apply the reset in correct order from CommitCallback.

Also make shell transition no longer use setOrientationChanging,
because it is used for legacy frozen state that shell transition
doesn't use. That avoids prematurely notifing the async rotation
controller that a window has completed rotation.

Bug: 266711229
Test: atest TransitionTests#testDisplayRotationChange
Change-Id: I8484d38c1a2dfc77f371d2ba3c9848f2341b8f4a