Merge "PIP window cant be ime target." into rvc-dev am: 466a3e5bfa am: fab1b64f3f am: 2ad5542036

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11604119

Change-Id: I1decb0c9ee466d5b4ce6aac08c93b44c66517e91