Fix dropdown

app.py

@@ -229,9 +229,10 @@ css = """
 def update_model_dropdown(language: str):
     if language in language_to_models:
         choices = language_to_models[language]
-        return gr.Dropdown.update(
+        return gr.Dropdown(
             choices=choices,
             value=choices[0],
+            interactive=True,
         )
 
     raise ValueError(f"Unsupported language: {language}")
@@ -253,7 +254,6 @@ with demo:
         choices=language_to_models[language_choices[0]],
         label="Select a model",
         value=language_to_models[language_choices[0]][0],
-        allow_custom_value=True,
     )
 
     language_radio.change(