Improve error messages for _stats with closed indices (#13012)#13338

mch2 merged 1 commit intoopensearch-project:2.xopensearch-project/OpenSearch:2.xfrom

srikanthpadakanti:backport/backport-13012-to-2.xsrikanthpadakanti/OpenSearch:backport/backport-13012-to-2.xCopy head branch name to clipboard