graphql: Fix mutation on predicate with special characters having dgr… (

#5577)

* graphql: Fix mutation on predicate with special characters having dgraph directive. (#5526)

* Fix Dgraph directive for multiple languages.

(cherry picked from commit 92232c0)
(cherry picked from commit 829cbb0)

graphql/e2e/directives/schema.graphql

@@ -143,3 +143,8 @@ type Message {
     content: String! @dgraph(pred: "post")
     author: String @dgraph(pred: "<职业>")
 }
+
+type Message {
+    content: String! @dgraph(pred: "post")
+    author: String @dgraph(pred: "<职业>")
+}

graphql/resolve/schema.graphql

@@ -229,3 +229,8 @@ type Y implements X @auth(
 ){
   userRole: String @search(by: [hash])
 }
+
+type Message {
+        content: String! @dgraph(pred: "post")
+        author: String @dgraph(pred: "<职业>")
+}

graphql/schema/gqlschema_test.yml

@@ -1044,6 +1044,7 @@ invalid_schemas:
   -
     name: "@custom directive with undefined parameter in body"
     input: |
+<<<<<<< HEAD
       type Author {
         id: ID!
         name: String
@@ -2582,4 +2583,4 @@ valid_schemas:
           method: "POST",
           body: "{sid: $id}"
           })
-      }
+      }