Merge "Remove redundant checks that stop updating systemUI when entering dream" into rvc-dev am: a3a29967b1 am: 57319f5921

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12066142

Change-Id: Ia267a3fcbb3fcd67572d834d1819621571ad5ca9