Merge "Ignore null action in PackageManagerService." into main am: 454a15144d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3320013

Change-Id: I017c5c044b6485453dbe9bbb632ce747d539b93d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>