Merge "Relax locking for startActivityInPackage()." into rvc-dev am: 3c76edd5a3 am: 388ec641e4 am: baabf7a464

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11722894

Change-Id: I6053e8badb6d6f049e2647cad230ff7b80afe6ba