Merge "Ignore null action in AppWidgetServiceImpl." into main am: cf4fd8c4b5

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3322499

Change-Id: I07a7700bdf00d4709c4d49ac26c05e2259494b1a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>