Merge pull request #15896 from taosdata/feature/3.0_mhli

refactor(sync): change err code

source/libs/transport/src/transCli.c

@@ -1271,6 +1271,9 @@ int cliAppCb(SCliConn* pConn, STransMsg* pResp, SCliMsg* pMsg) {
         transFreeMsg(pResp->pCont);
         cliSchedMsgToNextNode(pMsg, pThrd);
         return -1;
+      } else {
+        // change error code for taos client driver if retryCnt exceeds limit
+        if (0 == strncmp(pTransInst->label, "TSC", strlen("TSC"))) pResp->code = TSDB_CODE_APP_NOT_READY;
       }
     }
   }