Fix Desktop Windowing focus if clicked in Taskbar

* Added `hasOrderChanges` to `Transition` to make a shallow check if
  there was a reorder change.
* Updated `ActivityStarter.handleStartResult` to not abort
  `START_DELIVERED_TO_TOP` result when has reorder changes.

Bug: 308995974
Test: manual, atest TransitionTests
Flag: none
Change-Id: Ia295ead19109126a6406ab9de4427f4270341ca6