Update image handling in Gradio_UI to utilize gr.Image for AgentImage instances

Gradio_UI.py

@@ -164,7 +164,9 @@ def stream_to_gradio(
     elif isinstance(final_answer, AgentImage):
         yield gr.ChatMessage(
             role="assistant",
-            content={"path": final_answer.to_string(), "mime_type": "image/png"},
+            # content={"path": final_answer.to_string(), "mime_type": "image/png"},
+            content=gr.Image(str(final_answer)),
+            metadata={"mime_type": "image/png"},
         )
     elif isinstance(final_answer, AgentAudio):
         yield gr.ChatMessage(