Merge "Revert "Accept a Window as shown if it's in any transition"" into...

Merge "Revert "Accept a Window as shown if it's in any transition"" into udc-dev am: 2cc23465 am: 89f100c7 am: 2149c477

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22784152



Change-Id: I8273b84147a5552b03eccaf237f66c7607e246ba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>