fix: expose admitted run filter over RPC

tests/wf_transport_rpc_http/test_schedules_rpc.py

@@ -28,6 +28,7 @@ from wf_transport_rpc_http.client.schedules import RpcScheduleClientMixin
 from wf_transport_rpc_http.models import (
     CreateScheduleParams,
     ListOccurrencesParams,
+    ListRunsParams,
     UpdateScheduleParams,
 )
 
@@ -36,6 +37,11 @@ def _cron() -> dict[str, Any]:
     return {"kind": "cron", "expression": "* * * * *", "timezone": "UTC"}
 
 
+def test_rpc_list_runs_accepts_admitted_status() -> None:
+    """RPC validation exposes the API's admitted-run filter."""
+    assert ListRunsParams(status="admitted").status == "admitted"
+
+
 def _constant_plan() -> RawWorkflowPlan:
     return RawWorkflowPlan.model_validate(
         {