This cl is fixed one of the suggestion. Refer to b/181186668 for another
suggestion on Accessibility Scanner result.
Bug: 181184589
Test: Manual test by Accessibility Scanner
Change-Id: Ief0908891c98f641c99d578cf5acb210cc972e91
-Private DNS dialog uses preference_widget_dialog_summary
layout. It is wrong to set Bluetooth string for it.
-Remove default string from preference_widget_dialog_summary
-Set the customized string in BaseBluetoothDialogPreference
Bug: 179329046
Test: manual test
Change-Id: I749647f48e4bba7d4d0f9099d1c40d788778c15e