Keep display orientation if top rotated app is in transition

The original check may miss the case that the task is transition
target but the activity is not. Otherwise when there is parallel
transitions, a finished activity transition will interrupt the
running transient transition by triggering display change.

Bug: 421042201
Flag: EXEMPT bugfix
Test: DisplayContentTests#testRespectNonTopVisibleFixedOrientation
Test: Enter recents from a task which contains 2 activities.
      And then the task's top activity calls finish.
      After the activity level close transition is done, the
      recents transition should be still active.
Change-Id: Ie06c1e89471435b8da1e2de0efc3915be5005bab