Merge changes Ic1f3d681,Ib713b4d8,Ic7e9460f,Id78e47f9,I83c964eb into main

* changes:
  [flexiglass] Do not generateHeadsUpAnimation when dragging HUN
  [flexiglass] Reset stackTop when idle on Gone scene
  [flexiglass] Use intrinsicHeight for HUN placeholder and update translation
  [flexiglass] Fix HUN placeholder remaining visible after the Shade is opened and closed
  [flexiglass] Fix touch gesture interruption when dragging HUN