Fix audio occlusion (#10538)

Content.Client/Audio/ContentAudioSystem.cs

@@ -0,0 +1,8 @@
+using Content.Shared.Audio;
+
+namespace Content.Client.Audio;
+
+public sealed class ContentAudioSystem : SharedContentAudioSystem
+{
+
+}

Content.Server/Audio/ContentAudioSystem.cs

@@ -0,0 +1,8 @@
+using Content.Shared.Audio;
+
+namespace Content.Server.Audio;
+
+public sealed class ContentAudioSystem : SharedContentAudioSystem
+{
+
+}

Content.Shared/Audio/SharedContentAudioSystem.cs

@@ -0,0 +1,14 @@
+using Content.Shared.Physics;
+
+namespace Content.Shared.Audio;
+
+public abstract class SharedContentAudioSystem : EntitySystem
+{
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        _audio.OcclusionCollisionMask = (int) CollisionGroup.Impassable;
+    }
+}