fix(BA-6031): pass RouteStatus enum directly to RouteHistoryRow fixture

StrEnumType.process_bind_param expects the enum object, not a plain string.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: HyeockJinKim

tests/unit/manager/repositories/deployment/test_deployment_repository_history.py

@@ -1457,8 +1457,8 @@ async def test_route_with_history(
                     route_id=route_id,
                     deployment_id=endpoint_id,
                     phase="provisioning",
-                    from_status=str(RouteStatus.PROVISIONING.value),
-                    to_status=str(RouteStatus.PROVISIONING.value),
+                    from_status=RouteStatus.PROVISIONING,
+                    to_status=RouteStatus.PROVISIONING,
                     result=str(SchedulingResult.FAILURE),
                     error_code="SESSION_CREATION_FAILED",
                     message="Session creation failed",