feat: disable use_default_emb_or_custom_radio label

app.py

@@ -167,6 +167,7 @@ with demo:
         choices=["預設語者", "客製化語者"],
         value="預設語者",
         visible=True,
+        show_label=False,
     )
     speaker_wav = gr.Audio(
         label="客製化語音",