Core/Networking: Fixed Socket::DelayedCloseSocket not working if write queue is empty when its called on linux and mac

Closes #29887

src/server/shared/Networking/Socket.h

@@ -164,7 +164,14 @@ public:
     }
 
     /// Marks the socket for closing after write buffer becomes empty
-    void DelayedCloseSocket() { _closing = true; }
+    void DelayedCloseSocket()
+    {
+        if (_closing.exchange(true))
+            return;
+
+        if (_writeQueue.empty())
+            CloseSocket();
+    }
 
     MessageBuffer& GetReadBuffer() { return _readBuffer; }