Optimize views (graphql-python#1439)

* Optimize execute_graphql_request

* Require operation_ast to be found by view handler

* Remove unused show_graphiql kwarg

* Old style if syntax

* Revert "Remove unused show_graphiql kwarg"

This reverts commit 33b3426.

* Add missing schema validation step

* Pass args directly to improve clarity

* Remove duplicated operation_ast not None check

---------

Co-authored-by: Firas Kafri <3097061+firaskafri@users.noreply.github.com>
Co-authored-by: Kien Dang <mail@kien.ai>

graphene_django/views.py

@@ -336,12 +336,7 @@ def execute_graphql_request(
                 )
             )
 
-        validation_errors = validate(
-            schema,
-            document,
-            self.validation_rules,
-            graphene_settings.MAX_VALIDATION_ERRORS,
-        )
+        validation_errors = validate(schema, document)
 
         if validation_errors:
             return ExecutionResult(data=None, errors=validation_errors)