refactor(navigation): remove legacy navigation.js and integrate logic into navigation_sidebar.js

templates/partials/sidebar_nav.html

@@ -1,4 +1,5 @@
 {% set sidebar_nav = get_sidebar_navigation(request) %}
+{% set nav_roles = sidebar_nav.roles if sidebar_nav and sidebar_nav.roles else [] %}
 {% set nav_groups = sidebar_nav.groups if sidebar_nav else [] %}
 {% set current_path = request.url.path if request else '' %}
 
@@ -6,6 +7,7 @@
   class="sidebar-nav"
   aria-label="Primary navigation"
   data-navigation-source="{{ 'server' if sidebar_nav else 'fallback' }}"
+  data-navigation-roles="{{ nav_roles | join(',') }}"
 >
   <div class="sidebar-nav-controls">
     <button id="nav-prev" class="nav-chevron nav-chevron-prev" aria-label="Previous page">ᐊ</button>