Fix playglobalsound volume (#8208)

Content.Server/Administration/Commands/PlayGlobalSound.cs

@@ -52,6 +52,13 @@ public sealed class PlayGlobalSound : IConsoleCommand
                     return;
                 }
 
+                // No users specified so play for them all.
+                if (args.Length == 2)
+                {
+                    filter = Filter.Empty().AddAllPlayers(_playerManager);
+                }
+                else
+                {
                     filter = Filter.Empty();
 
                     // Skip the first argument, which is the sound path.
@@ -67,6 +74,8 @@ public sealed class PlayGlobalSound : IConsoleCommand
 
                         filter.AddPlayer(session);
                     }
+                }
+
                 break;
         }