Fix rebased budget-window gateway tests

Author: anth-volk

projects/policyengine-api-simulation/tests/gateway/test_endpoints.py

@@ -504,12 +504,15 @@ def test__given_batch_state__then_poll_returns_completed_response(
                 batch_job_id="mock-batch-job-id-123",
                 status="complete",
                 country="us",
+                region="us",
                 version="1.500.0",
+                target="general",
                 resolved_app_name="policyengine-simulation-us1-500-0-uk2-66-0",
                 policyengine_bundle=PolicyEngineBundle(model_version="1.500.0"),
                 start_year="2026",
                 window_size=2,
                 max_parallel=2,
+                request_payload={"country": "us", "region": "us"},
                 years=["2026", "2027"],
                 queued_years=[],
                 running_years=[],