MC-18509: Update resolvers to implement the schema changes

- deprecated media_gallery_entries

Author: Prabhu Ram

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

@@ -18,6 +18,7 @@
  * @inheritdoc
  *
  * Format a product's media gallery information to conform to GraphQL schema representation
+ * @deprecated
  */
 class MediaGalleryEntries implements ResolverInterface
 {

app/code/Magento/CatalogGraphQl/etc/schema.graphqls

@@ -92,7 +92,7 @@ interface ProductInterface @typeResolver(class: "Magento\\CatalogGraphQl\\Model\
     type_id: String @doc(description: "One of simple, virtual, bundle, downloadable, grouped, or configurable.")
     websites: [Website] @doc(description: "An array of websites in which the product is available.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\Websites")
     product_links: [ProductLinksInterface] @doc(description: "An array of ProductLinks objects.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\ProductLinks")
-    media_gallery_entries: [MediaGalleryEntry] @doc(description: "An array of MediaGalleryEntry objects.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\MediaGalleryEntries")
+    media_gallery_entries: [MediaGalleryEntry] @deprecated(reason: "Use product's `media_gallery` instead") @doc(description: "An array of MediaGalleryEntry objects.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\MediaGalleryEntries")
     tier_prices: [ProductTierPrices] @doc(description: "An array of ProductTierPrices objects.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\TierPrices")
     price: ProductPrices @doc(description: "A ProductPrices object, indicating the price of an item.") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\Price")
     gift_message_available: String @doc(description: "Indicates whether a gift message is available.")