[automerger skipped] DO NOT MERGE: WM: Only allow system to use NO_INPUT_CHANNEL. am: 514b329776 am: f5aa61a735 -s ours am: 027e0beec5 am: 73db664c90

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13205849

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3845dabb9ac469fb1974eede1c7ceb31a98ccf73