Revert "Remove testFinishActivityWithMoveTaskToBackAfterStop from CTS."

This reverts commit 6a7fc302f7ca47d2549689a2729f0b34c5cf6b32.

Reason: Original CL wasn't reviewed by test owners.

Bug: 64983646
Change-Id: Ieb4ccca3857bffec00797a1d662a90f7fb2f1e6c
1 file changed