Fix: add check for menu link access (#900)

Author: Dan Lemon

modules/graphql_core/src/Plugin/GraphQL/Fields/Menu/MenuLinks.php

@@ -73,7 +73,7 @@ public function resolveValues($value, array $args, ResolveContext $context, Reso
       ];
 
       foreach (array_filter($this->menuLinkTree->transform($tree, $manipulators), function (MenuLinkTreeElement $item) {
-        return $item->link instanceof MenuLinkInterface && $item->link->isEnabled();
+        return $item->link instanceof MenuLinkInterface && $item->link->isEnabled() && (empty($item->access) || $item->access->isAllowed());
       }) as $branch) {
         yield $branch;
       }

modules/graphql_core/src/Plugin/GraphQL/Fields/MenuLink/MenuLinkLinks.php

@@ -28,7 +28,7 @@ public function resolveValues($value, array $args, ResolveContext $context, Reso
     if ($value instanceof MenuLinkTreeElement) {
       $items = array_filter($value->subtree, function(MenuLinkTreeElement $item) {
         if ($item->link instanceof MenuLinkInterface) {
-          return $item->link->isEnabled();
+          return ($item->link->isEnabled() && (empty($item->access) || $item->access->isAllowed()));
         }
         return TRUE;
       });