Fix subquery planning having an aggregation that is used in order by as long as we can merge it all into a single route#16402

GuptaManan100 merged 1 commit intovitessio:mainvitessio/vitess:mainfrom

planetscale:fix-orderby-subquery-aggregationplanetscale/vitess:fix-orderby-subquery-aggregationCopy head branch name to clipboard