Add CallAudioState ctor as TestApi

Needed for CTS testing

Bug: 79528185
Test: CTS
Change-Id: Iad154257a93cc776d5800527e46e777fd6c88220
Merged-In: Iad154257a93cc776d5800527e46e777fd6c88220
diff --git a/telecomm/java/android/telecom/CallAudioState.java b/telecomm/java/android/telecom/CallAudioState.java
index 4b827d2..e33ba7e 100644
--- a/telecomm/java/android/telecom/CallAudioState.java
+++ b/telecomm/java/android/telecom/CallAudioState.java
@@ -19,6 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.TestApi;
 import android.bluetooth.BluetoothDevice;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -100,6 +101,7 @@
     }
 
     /** @hide */
+    @TestApi
     public CallAudioState(boolean isMuted, @CallAudioRoute int route,
             @CallAudioRoute int supportedRouteMask,
             @Nullable BluetoothDevice activeBluetoothDevice,