* [Feat](nereids) when dealing insert into stmt with empty table source, fe returns directly (#34418) When a LogicalOlapScan has no partitions, transform it to a LogicalEmptyRelation. When dealing insert into stmt with empty table source, fe returns directly. * [Fix](nereids) fix when insert into select empty table --------- Co-authored-by: feiniaofeiafei <moailing@selectdb.com>