ISTWCMS-5009: Using internal path for main menu when installing new site.

uw_sites_all.install

@@ -45,12 +45,12 @@ function uw_sites_all_install() {
   foreach ($menu_items as $menu_item) {
 
     // Create the URL from the route name.
-    $url = URL::fromRoute($menu_item['route_name'])->toString();
+    $url = URL::fromRoute($menu_item['route_name'])->getInternalPath();
 
     // Create the actual menu link.
     MenuLinkContent::create([
       'title' => $menu_item['title'],
-      'link' => ['uri' => 'internal:' . $url],
+      'link' => ['uri' => 'internal:/' . $url],
       'menu_name' => $menu_item['menu_name'],
       'weight' => $menu_item['weight'],
       'enabled' => $menu_item['enabled'],