fix(flowEditor): 修复子流程保存时没有时间节点导致异常的问题

src/pages/flowEditor/utils/common.ts

@@ -7,8 +7,8 @@ export const handelEventNodeList = (newRevertedData) => {
   const deleteEventSendNodeList = [];
   const deleteEventlisteneList = [];
   // 处理流程接口后的数据,这里是原始数据的依据
-  const currentEventSendNodeList = current.eventSendNodeList;
-  const currentEventlisteneList = current.eventlisteneList;
+  const currentEventSendNodeList = current?.eventSendNodeList || [];
+  const currentEventlisteneList = current?.eventlisteneList || [];
   // 画布数据
   const nodeEntries: [string, any][] = Object.entries(newRevertedData);