audio: Fix permission barrier regression on next

Flag should be checked in test methods.

Test: CtsMediaAudioRecordPermissionTests
Test: AudioRecordTest#testAudioRecordBuilderHotword:
Flag: EXEMPT BUG_FIX TEST_ONLY
Bug: 338089555
Bug: 364504407
Change-Id: Ie32a20a8d6e6a9671ecc3418db265206c6143fb9
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/server/audio/AudioService.java
index 4e24cf3..ce27825 100644
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -14714,6 +14714,7 @@
     @Override
     /** @see AudioManager#permissionUpdateBarrier() */
     public void permissionUpdateBarrier() {
+        if (!audioserverPermissions()) return;
         mAudioSystem.triggerSystemPropertyUpdate(mSysPropListenerNativeHandle);
         List<Future> snapshot;
         synchronized (mScheduledPermissionTasks) {