Bluetooth: Make notifications local-only

This will prevent them from showing up on external devices where they
would be less than useful.

Test: connect to watch and pair a device
Bug: 34612389
Change-Id: I8b02c20200ce78a73967b8121cf7d5653b68f356

src/com/android/settings/bluetooth/BluetoothPermissionRequest.java

@@ -165,6 +165,7 @@ public final class BluetoothPermissionRequest extends BroadcastReceiver {
                         .setDeleteIntent(PendingIntent.getBroadcast(context, 0, deleteIntent, 0))
                         .setColor(context.getColor(
                                 com.android.internal.R.color.system_notification_accent_color))
+                        .setLocalOnly(true)
                         .build();
 
                 notification.flags |= Notification.FLAG_NO_CLEAR; // Cannot be set with the builder.