[9.0] Handle the indices pattern `["*", "-*"]` when grouping indices by cluster name (#128610)#128842

pawankartik-elastic merged 2 commits intoelastic:9.0elastic/elasticsearch:9.0from

pawankartik-elastic:backport/9.0/pr-128610pawankartik-elastic/elasticsearch:backport/9.0/pr-128610Copy head branch name to clipboard