Remove ssr_mode=False to fix HF health check

HF Spaces health check may require SSR mode (default in Gradio 6.x).
The app serves HTTP 200 but HF stays in APP_STARTING because the
health endpoint isn't available without SSR.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.py

@@ -436,4 +436,4 @@ with gr.Blocks() as demo:
 print("=== Gradio UI built, launching... ===", flush=True)
 
 if __name__ == "__main__":
-    demo.launch(ssr_mode=False, server_name="0.0.0.0", allowed_paths=[EXAMPLES_DIR])
+    demo.launch(server_name="0.0.0.0", allowed_paths=[EXAMPLES_DIR])