PhonePolicy: Allow LeAudio only devices

With this patch LeAudio only devices will be automatically enabled for
Le Audio usecases.

Note: Minor coding style in AdapterService was also fix
reported by repo update

Bug: 291009881
Bug: 328471369
Test: mmm packages/modules/Bluetooth
Test: atest PhonePolicyTest
Test: manual bonding of LeAudio only devices
Change-Id: I90c9f2f73402fd110e101d00f5d52804f3e1e3bb