refactor: remove forum and topic feature chains

src/Settings/Settings.php

@@ -683,7 +683,7 @@ class Settings {
      * Finds the matching cat_custom_filter binding, falls back to global custom_filter.
      *
      * @param int $cat_id Category term ID.
-     * @return array{dimensions: array, show_cat: bool, show_tag: bool, show_topics: bool, show_orderby: bool}
+     * @return array{dimensions: array, show_cat: bool, show_tag: bool, show_orderby: bool}
      */
     public static function get_filter_config_for_category(int $cat_id): array {
         return PostDisplay::get_filter_config_for_category($cat_id);