Refactor navigation item handling: consolidate fetching logic and remove NavigationItemHelper

Author: Davide Zeni

library/Icinga/Util/Csp.php

@@ -252,14 +252,12 @@ protected static function fetchDashletNavigationItemConfigs()
     }
 
     /**
-     * Fetches the navigation items for the currently authenticated user.
+     * Fetches navigation items for the current user.
      *
-     * This method iterates through all registered navigation types, loads the
-     * user-specific configuration for each type, and compiles a complete
-     * list of menu items.
+     * Iterates through all registered navigation types, loads both user-specific
+     * and shared configurations, and returns a list of menu items.
      *
-     * @return array An array of navigation items, where each item is an
-     * associative array containing 'name' and 'url' keys.
+     * @return array Each item is an associative array with 'name' and 'url' keys.
      * Example: [ ['name' => 'Home', 'url' => '/'], ['name' => 'Profile', 'url' => '/profile'] ]
      */
     protected static function fetchNavigationItems()