test: use HTTPStatus enum instead of bare integers in security test assertions

src/documents/tests/test_permission_filtering_security.py

@@ -189,7 +189,7 @@ class TestAiChatAllDocumentsPermissionBoundary:
             format="json",
         )
 
-        assert response.status_code == 200
+        assert response.status_code == HTTPStatus.OK
         mock_stream_chat.assert_called_once()
         _, kwargs = mock_stream_chat.call_args
         visible_ids = {doc.pk for doc in kwargs["documents"]}
@@ -280,7 +280,7 @@ class TestEmailDocumentPermissionBoundary:
             },
             format="json",
         )
-        assert response.status_code == 403
+        assert response.status_code == HTTPStatus.FORBIDDEN
 
 
 @pytest.mark.django_db
@@ -314,7 +314,7 @@ class TestBulkEditChangePermissionBoundary:
             },
             format="json",
         )
-        assert response.status_code == 403
+        assert response.status_code == HTTPStatus.FORBIDDEN
 
 
 @pytest.mark.django_db