[Backport 2.19-dev] Set max=1 in join as default when plugins.ppl.syntax.legacy.preferred=false (#5057)#5063

penghuo merged 1 commit into

opensearch-project:2.19-devopensearch-project/sql:2.19-devfrom

LantaoJin:backport/backport-5057-to-2.19-devLantaoJin/search-plugins-sql:backport/backport-5057-to-2.19-devCopy head branch name to clipboard