If an index page does not have any subcategories, the collapsible arrow should automatically disappear. This will reduce visual clutter and help users easily identify categories that do not have any further sections to expand. Current Behavior: Currently, all index pages (even those without subcategories) display a collapsible arrow, regardless of whether there are any subcategories to show. This can lead to confusion, as users may expect content to be hidden or expandable when it is not. Requested Behavior: If an index page has no subcategories, the collapsible arrow should be hidden or removed from the view. If an index page has subcategories, the collapsible arrow should remain visible, allowing the user to expand or collapse the list.