Update app.py to replace demo.launch with demo.queue().launch for enhanced performance and functionality.

app.py

@@ -178,4 +178,4 @@ print(client.predict("Alex", 5, False, api_name="/greet"))
 
     shared_state.change(pretty_json, shared_state, shared_state_box)
 
-demo.launch(mcp_server=True)
+demo.queue().launch(mcp_server=True)