Ensure dispatcher is idle before checking policy state am: 4fd86737 am: 89e486a5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23414764



Change-Id: I56b9db478d7405b457693f915f7fd320d8541dec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>