fix push callback-list-0's checksum_scn for parallel redo repeated repaly

src/storage/memtable/mvcc/ob_mvcc_trans_ctx.cpp

@@ -385,7 +385,7 @@ int ObTransCallbackMgr::append(ObITransCallback *node)
         } else {
           // need to push up the callback_list.0's checksum_scn
           // to avoid it calculate checksum includes those callbacks
-          callback_list_.inc_update_checksum_scn(serial_final_scn_);
+          callback_list_.inc_update_checksum_scn(SCN::scn_inc(serial_final_scn_));
           ATOMIC_STORE(&has_branch_replayed_into_first_list_, true);
           TRANS_LOG(INFO, "replay log before serial final when reach serial final",
                     KPC(this), KPC(get_trans_ctx()), KPC(node));