BluetoothDeviceManager: Fix regression after gtbs merge am: 735c249558 am: 9921c21329 am: 2ca2bbe1f5

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telecomm/+/1947108

Change-Id: Ie920a4e216e099999fd805a99d29c70d03c5df5b