Try fix js issue with window

app.py

@@ -17,8 +17,12 @@ def process_message(message):
     state.context = message
     return message
 
-# JavaScript for message handling
-js = "function on_message(event){alert('test');} window.addEventListener('message',on_message);"
+js = """(() => {
+    const messageHandler = (event) => {
+        alert('test');
+    };
+    window.addEventListener('message', messageHandler);
+})();"""
 
 with gr.Blocks(js=js) as demo:
     with gr.Row():