BluetoothService: Respect config_hsumBootStrategy

The HSUM model has changed and this patch applies the new strategy.

Bug: 389067454
Test: mmm packages/modules/Bluetooth
Test: Deploy to DUT, Settings App can discover new Bluetooth devices
Flag: EXEMPT, behind new config
Change-Id: I18afadccc17b9478f4ebec5a139a51404192188e