Adapted app.py to handle language selection based on the selected tab

app.py

@@ -56,17 +56,22 @@ with demo:
                             value="Select all languages", size="sm", scale=1
                         )
 
-                        def update_bar():
+                        def update_bar(selected_tab):
+                            if selected_tab in [0, 1]:
+                                choices = [(LANG_SYMBOLS.get(l, l), l) for l in core.languages_list]
+                                value = core.languages_list
+                            else:
+                                raise ValueError
                             langs_bar = gr.CheckboxGroup(
-                                choices=[(LANG_SYMBOLS.get(l,l),l) for l in core.languages_list],
-                                value=core.languages_list,
+                                choices=choices,
+                                value=value,
                                 label="Select languages to average over",
                                 elem_id="column-select",
                                 interactive=True,
                             )
                             return langs_bar
 
-                        select.click(update_bar, inputs=[], outputs=langs_bar)
+                        select.click(update_bar, inputs=[selected_tab], outputs=langs_bar)
 
                 with gr.Row():
                     shown_tasks = gr.CheckboxGroup(