[Backport 2.19-dev] Support sort expression pushdown for SortMergeJoin(#4830)#4928

LantaoJin merged 5 commits intoopensearch-project:2.19-devopensearch-project/sql:2.19-devfrom

songkant-aws:backport-smj-sort-pushdownsongkant-aws/sql:backport-smj-sort-pushdownCopy head branch name to clipboard