Merge "Ignore null action in BackgroundJobsController." into main am: f09d4f1296

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3322497

Change-Id: Ie9eccc6f20035a0918be78be9940fdd9dac07142
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>