Always initialize the AirplaneModeListener

Tests now need a provider since they are calling the settings
Some helper tests no longer work with the fake provider. They are
removed since this is not a meaningful test.

Bug: 271963349
Bug: 262605980
Test: atest ServiceBluetoothTests | no-op change
Change-Id: I9881edb1a89e65542c36eedc4670fa6a8a5f51a5