give audioserver access to media.metrics

Let the audioserver record metrics with media.metrics service.
This is for 'audiopolicy' metrics.

Bug: 78595399
Test: record from different apps, see records in 'dumpsys media.metrics'
Change-Id: Ie5c403d0e5ac8c6d614db5e7b700611ddd6d07e9
Merged-In: I63f9d4ad2d2b08eb98a49b8de5f86b6797ba2995

private/audioserver.te

@@ -35,6 +35,7 @@ allow audioserver batterystats_service:service_manager find;
 allow audioserver permission_service:service_manager find;
 allow audioserver power_service:service_manager find;
 allow audioserver scheduling_policy_service:service_manager find;
+allow audioserver mediametrics_service:service_manager find;
 
 # Allow read/write access to bluetooth-specific properties
 set_prop(audioserver, bluetooth_a2dp_offload_prop)