Marked canonical_url field as deprecated

Author: yogeshsuhagiya

app/code/Magento/UrlRewriteGraphQl/Model/Resolver/EntityUrl.php

@@ -75,6 +75,7 @@ public function resolve(
         if ($urlRewrite) {
             $result = [
                 'id' => $urlRewrite->getEntityId(),
+                'canonical_url' => $urlRewrite->getTargetPath(),
                 'relative_url' => $urlRewrite->getTargetPath(),
                 'type' => $this->sanitizeType($urlRewrite->getEntityType())
             ];

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

@@ -7,6 +7,7 @@ type Query {
 
 type EntityUrl @doc(description: "EntityUrl is an output object containing the `id`, `relative_url`, and `type` attributes") {
     id: Int @doc(description: "The ID assigned to the object associated with the specified url. This could be a product ID, category ID, or page ID.")
+    canonical_url: String @deprecated(reason: "The canonical_url field is deprecated, use relative_url instead.")
     relative_url: String @doc(description: "The internal relative URL. If the specified  url is a redirect, the query returns the redirected URL, not the original.")
     type: UrlRewriteEntityTypeEnum @doc(description: "One of PRODUCT, CATEGORY, or CMS_PAGE.")
 }