charger: fix secondary display not turning off after first display was off am: 426bbdb4 am: 9f79a0d0

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/19983729



Change-Id: I9953dd9505e4867319cbb41ef40d80bd2b934c74
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>