fix: data board socket can not echo first record

@@ -3,6 +3,7 @@ import { Ref, unref } from 'vue';
 import { DataBoardLayoutInfo } from '../types/type';
 import { JWT_TOKEN_KEY } from '/@/enums/cacheEnum';
 import { getAuthCache } from '/@/utils/auth';
+import { isNullAndUnDef } from '/@/utils/is';
 
 interface SocketMessage {
   tsSubCmds: SocketMessageItem[];
@@ -74,10 +75,9 @@ export function useSocketConnect(dataSourceRef: Ref<DataBoardLayoutInfo[]>) {
     },
     onMessage(_ws, message) {
       try {
-        // console.log({ dataSource: unref(dataSourceRef), cmdIdMapping });
         const res: ResponseMessage = JSON.parse(message.data);
         const { subscriptionId, data = {} } = res;
-        if (!subscriptionId) return;
+        if (isNullAndUnDef(subscriptionId)) return;
         const mappingRecord = cmdIdMapping.get(subscriptionId);
         if (!mappingRecord) return;
         const { attribute, recordIndex, dataSourceIndex } = mappingRecord;