Prevent overlay drawing on top of Bluetooth discovery request dialog am:...

Prevent overlay drawing on top of Bluetooth discovery request dialog am: ac671004 am: 2094f016 am: 0b7ce766 am: fa8d015b am: 682c00d8 am: 62ec2b5a am: 01251764 am: 06828a4a am: ee42cb27

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/11484057

Change-Id: I61d10981c9e948ffd161ada3860401dd9901e7db