🐛 Fix(streamlit_reportview.py): correct df_index creation

Author: sayalaruano

src/vuegen/streamlit_reportview.py

@@ -744,7 +744,7 @@ def _generate_component_imports(self, component: r.Component) -> List[str]:
             component_imports.extend(components_imports['chatbot'])
         elif component_type == r.ComponentType.DATAFRAME:
             component_imports.extend(components_imports['dataframe'])
-            component_imports.extend("df_index = 1")
+            component_imports.append('df_index = 1')
 
         # Return the list of import statements
         return component_imports