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

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

Change-Id: I90a57cb2ab6b711340dca70b2603142ac35c1b59