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

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



Change-Id: I33ea48e9ad93480629024f9c6fa7190915fdee4e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>