fix: set trans from rollback to undo if mnode not leader

source/dnode/mnode/impl/src/mndTrans.c

@@ -598,7 +598,7 @@ static int32_t mndTransActionUpdate(SSdb *pSdb, STrans *pOld, STrans *pNew) {
   }
 
   if (pOld->stage == TRN_STAGE_ROLLBACK) {
-    pOld->stage = TRN_STAGE_REDO_ACTION;
+    pOld->stage = TRN_STAGE_UNDO_ACTION;
     mTrace("trans:%d, stage from rollback to undoAction since perform update action", pNew->id);
   }
 

source/dnode/mnode/sdb/src/sdbHash.c

@@ -160,6 +160,7 @@ static int32_t sdbInsertRow(SSdb *pSdb, SHashObj *hash, SSdbRaw *pRaw, SSdbRow *
   if (insertFp != NULL) {
     code = (*insertFp)(pSdb, pRow->pObj);
     if (code != 0) {
+      if (terrno == 0) terrno = TSDB_CODE_MND_TRANS_UNKNOW_ERROR;
       code = terrno;
       taosHashRemove(hash, pRow->pObj, keySize);
       sdbFreeRow(pSdb, pRow, false);