Decouple task visibility from surface life

- Add an option to skip hiding the task when the surface has been
  destroyed. This is needed for cases where the taskview consists a
  launch root task and the surface has been destroyed because the
  container activity is stopped.

Test: m
Test: TaskViewTest
Test: atest ActivityStarterTests on seahawk_car_ui_portrait
Bug: 296600028
Change-Id: I06624be109bd8e53c9a8b6996e58ff61894034c9