refactor app.py to update demo launch logic; ensure proper execution within main guard

app.py

@@ -117,7 +117,8 @@ with gr.Blocks() as file:
         submit_button.click(transcribe, inputs=[input_audio_microphone, output], outputs=[output, latency_textbox])
         clear_button.click(clear, outputs=[output])
 
-with gr.Blocks(theme=gr.themes.Ocean()) as demo:
+with gr.Blocks() as demo:
     gr.TabbedInterface([microphone, file], ["Microphone", "Transcribe from file"])
 
-demo.launch()
+if __name__ == "__main__":
+    demo.launch(share=False)