Skip notifying change without visibility change

To reduce unnecessary calculations.

Note that legacy transition still needs it because if a transition
is prepared, it still requires to add the no change records into
mOpeningApps to trigger animation callback, e.g. onAnimationFinished.

Bug: 159103089
Test: CtsWindowManagerDeviceTestCases
Change-Id: Id9b95d1fa57581e661b9beb7e6d3614235715f22