Merge "Drop the cloned windows from visible window list" into tm-dev am: 8ef35112 am: 83574be6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18659076



Change-Id: Ibe3bfbbe44c5906aeb6c16c81c7966e567805584
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>