AudioService: anonymize Bluetooth MAC addresses

Make sure APIs returning AudioDeviceAttributes from AudioService
anonymize the Bluetooth MAC addresses because those are considered
privacy sensitive.
Only expose the full MAC address to system and apps with BLUETOOTH_CONNECT
permission.

setters, getters and listeners for preferred device for strategy,
preferred device for capture preset and mute await connection are
modified:
- when entering AudioService, full MAC addresses are retrieved based on the
  known Bluetooth devices stored in AudioDeviceInventory.mDeviceInventory
- when exiting AudioService, MAC addresses are anonymized if the client
  app does not have BLUETOOTH_CONNECT permission or is not a system component

APIs based on AudioDeviceInfo do not need to be modified as the
AudioDeviceInfo MAC address is for the AudioPort cached in the app
process and AudioPorts are anonymized by the native audioserver before
being returned to client apps.

Bug: 285588444

Test: atest AudioManagerTest
Test: atest RoutingTest
Test: atest AudioCommunicationDeviceTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:787a07d969967bafb46c6bebb03f66e24ef5ad2e)
Merged-In: I67bbba2ba941c97138a068d640079b17650e3d86
Change-Id: I67bbba2ba941c97138a068d640079b17650e3d86