Merge "Hide non-system overlay window on ActivityPicker" into qt-dev am: 9513326e44 am: e1660daab4 am: 83d11bebe2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/13835815

Change-Id: Ie359d84b40c5b7a706f40c8a1c905c8d9c02afab