MC-18509: Update resolvers to implement the schema changes

- fix review comments - (change to interface)

Author: Prabhu Ram

app/code/Magento/CatalogGraphQl/Model/Resolver/Product/MediaGallery.php

@@ -10,7 +10,7 @@
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\GraphQl\Query\Resolver\ContextInterface;
 use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
-use Magento\Catalog\Model\Product;
+use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Framework\GraphQl\Config\Element\Field;
 use Magento\Framework\GraphQl\Query\ResolverInterface;
 
@@ -45,7 +45,7 @@ public function resolve(
             throw new LocalizedException(__('"model" value should be specified'));
         }
 
-        /** @var Product $product */
+        /** @var ProductInterface $product */
         $product = $value['model'];
 
         $mediaGalleryEntries = [];

app/code/Magento/CatalogGraphQl/Model/Resolver/Product/MediaGallery/Label.php

@@ -13,7 +13,7 @@
 use Magento\Framework\GraphQl\Config\Element\Field;
 use Magento\Framework\GraphQl\Query\ResolverInterface;
 use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
-use Magento\Store\Model\Store;
+use Magento\Store\Api\Data\StoreInterface;
 
 /**
  * Return media label
@@ -56,7 +56,7 @@ public function resolve(
         /** @var Product $product */
         $product = $value['model'];
         $productId = (int)$product->getEntityId();
-        /** @var Store $store */
+        /** @var StoreInterface $store */
         $store = $context->getExtensionAttributes()->getStore();
         $storeId = (int)$store->getId();
         if (!isset($value['image_type'])) {