fix: fix one extra broken future annotations with the new | syntax

Author: bellini666

strawberry_django/fields/filter_order.py

@@ -3,7 +3,7 @@
 import dataclasses
 import inspect
 from functools import cached_property
-from typing import TYPE_CHECKING, Any, Final, Literal, overload
+from typing import TYPE_CHECKING, Any, Final, Literal, Optional, overload
 
 from strawberry import UNSET
 from strawberry.annotation import StrawberryAnnotation
@@ -95,7 +95,7 @@ def type_annotation(self) -> StrawberryAnnotation | None:
 
                 annotation = ordering.Ordering
 
-            return StrawberryAnnotation(annotation | None)
+            return StrawberryAnnotation(Optional[annotation])  # noqa: UP045
 
         return None