Inject folium when execute chart code

src/streamlit_app.py

@@ -917,7 +917,7 @@ if st.session_state.do_visualize:
             chart_code = suggest_charts_with_gpt(df)
             if chart_code:
                 try:
-                    exec(chart_code, {"st": st, "pd": pd, "df": df, "pdk": pdk})
+                    exec(chart_code, {"st": st, "pd": pd, "df": df, "pdk": pdk, "folium": folium, "st_folium": st_folium})
                 except Exception as e:
                     st.error(f"❌ Error running chart code: {e}")