Fix Browse dropdown: allow_custom_value for dynamically-populated choices

app.py

@@ -345,7 +345,11 @@ with gr.Blocks(title="LocalSQL") as demo:
         schema_map = gr.HTML()
 
     with gr.Accordion("Browse data (peek at rows)", open=False):
-        table_dropdown = gr.Dropdown(label="Table", choices=[], interactive=True)
+        # allow_custom_value: choices are populated dynamically by refresh_browser,
+        # so the backend must not reject a value it has not registered yet.
+        table_dropdown = gr.Dropdown(
+            label="Table", choices=[], interactive=True, allow_custom_value=True
+        )
         browse_df = gr.Dataframe(label="First 10 rows", interactive=False)
 
     with gr.Row():