fix: typing

Author: imorland

js/src/common/utils/addFollowingPageOption.ts

@@ -1,14 +1,14 @@
 // Internal state shared with followingPageOptions
-const optionProviders: Array<(section: string) => Record<string, string>> = [];
+const optionProviders: Array<(section: string) => Record<string, string | any[]>> = [];
 
 // Export the providers array so followingPageOptions can access it
 export { optionProviders };
 
 /**
  * Register a provider function that contributes options to the following page dropdown.
  * The provider will be called with a section name (e.g., "admin.settings", "forum.index_filter")
- * and should return an object mapping option keys to translated labels.
+ * and should return an object mapping option keys to translated labels (or arrays for grouped options).
  */
-export default function addFollowingPageOption(provider: (section: string) => Record<string, string>): void {
+export default function addFollowingPageOption(provider: (section: string) => Record<string, string | any[]>): void {
   optionProviders.push(provider);
 }