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

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

Change-Id: Ic9a7c0fb856096e02a20f40fa723a00b62d92819