Merge "Verifying success of setting default Launcher in tests" into sc-dev am: ba302e8a6a am: 0b1eeaed4f am: 90c056a560

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15158349

Change-Id: I2ec006e4e3eb11efc9b7373e62c7afe82a26e233