feat: enhance item attributes management by adding sort order; update related models, resources, and tests for visibility and ordering of variants

app/Domains/Cart/Resources/CartItemResource.php

@@ -45,7 +45,7 @@ class CartItemResource extends JsonResource
                         'stock_tecnico' => $this->catalogItem->inventory_policy === InventoryPolicy::Unlimited
                             ? null
                             : $variant->inventory->availableStock(),
-                        'values' => $variant->selectionOptions(),
+                        'values' => $variant->selectionOptions($this->catalogItem->itemAttributes),
                     ])
                     ->values(),
             ],

app/Domains/Cart/Services/CartService.php

@@ -107,6 +107,7 @@ class CartService
         return $cart->fresh()->load([
             'items.catalogItem.attachments',
             'items.catalogItem.inventory',
+            'items.catalogItem.itemAttributes.attribute',
             'items.catalogItem.variants.inventory',
             'items.catalogItem.variants.definitions.itemAttribute.attribute.options',
             'items.catalogItem.variants.eventDates',