Check resumed state of activity before skipping resuming

The activity may be paused state for pre-Q apps with 2
activities on different display. When touching the display
to switch focus, it relied on setFoucusedTask to be resumed.

Bug: 275508603
Test: MultiDisplayPolicyTests#testPreQTopProcessResumedDisplayMoved
Change-Id: Ic84aaa5f4cdaa818805452333b69052760ffd2a8