Merge "Insets: Fix stuck mPendingFrame" into rvc-dev am: 88e86e64 am: a50aa34d am: 27d7f84a am: 317c8233

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11744899

Change-Id: I3d86884b3653e344a52350c143d671fecfb0cd1d