Merge "Ignore null action in DeviceIdleController." into main am: 1539943b32 am: 63d945114c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3324493

Change-Id: I6445841302b6d0a0e94dc2a27756b8d5e4c9452e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>