Delay S3 repo warning if default region absent#133918

elasticsearchmachine merged 3 commits intoelastic:8.19elastic/elasticsearch:8.19from

DaveCTurner:2025/09/01/backport-133848-s3-repo-warning-819DaveCTurner/elasticsearch:2025/09/01/backport-133848-s3-repo-warning-819Copy head branch name to clipboard