AudioDeviceVolumeManager.getDeviceVolume fix returned VolumeInfo

For the VolumeInfo instance returned by getDeviceVolume:
- fix missing rescaling of the min/max volume index,
- do not always configure it the have a mute command

Bug: 271473257
Test: atest android.media.audio.cts.AudioDeviceVolumeManagerTest#testSetGetVolume
Change-Id: I676cb6fca3f301d80a54f6b149ed081c0de48bba