Use a more-specific heuristic to detect mirrored/virtual inset providers

The previous heuristic was too broad and effected remote control
targets that do control insets (like split-screen).

Bug: 158447971
Bug: 159364385
Test: Open 2 split apps, open/close ime in secondary and observe no
      popping. Open IME in a bubble and see that insets still apply.
      Go through fingerprint setup in SUW and observe no inset pop.
Change-Id: I87f742fbbb2c468090c899d4b3d2a927b809f998