Add permission MODIFY_AUDIO_SETTINGS_PRIVILEGED to SystemUI

The permission is required when calling "AudioManager.getBluetoothAudioDeviceCategory".

Bug: 341005211
Test: run locally
Flag: com.android.settingslib.flags.enable_determining_spatial_audio_attributes_by_profile
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:badb504f05ef9fd974b993e83ecc6f240e2b5ae8)
Merged-In: I34625ff49ade354cb8d9be321d1f5cade728312d
Change-Id: I34625ff49ade354cb8d9be321d1f5cade728312d