完善MECMAS21参数配置与分组交互

tests/test_amesim_pnrp17_xml.py

@@ -46,6 +46,7 @@ def _mass_node(name: str) -> dict[str, object]:
 def pnrp17_coupled_project() -> ReactFlowProjectPayload:
     return ReactFlowProjectPayload(
         name="amesim-pnrp17-coupled-smoke",
+        amesimParameterEncodingVersion=1,
         nodes=[
             component_node(
                 "chamber_1",