fix: Only append order to the resolver if it is a list

Author: bellini666

pyproject.toml

@@ -1,7 +1,7 @@
 [tool.poetry]
 name = "strawberry-graphql-django"
 packages = [{ include = "strawberry_django" }]
-version = "0.5.0"
+version = "0.5.1"
 description = "Strawberry GraphQL Django extension"
 authors = ["Lauri Hintsala <[email protected]>"]
 repository = "https://github.com/strawberry-graphql/strawberry-graphql-django"

strawberry_django/ordering.py

@@ -64,7 +64,7 @@ def arguments(self) -> List[StrawberryArgument]:
         arguments = []
         if not self.base_resolver:
             order = self.get_order()
-            if order and order is not UNSET:
+            if order and order is not UNSET and self.is_list:
                 arguments.append(argument("order", order))
         return super().arguments + arguments