[9.0] [ML] Improve EIS authorization to perform requests on a periodic basis instead of only once (#123639)#123918

elasticsearchmachine merged 4 commits intoelastic:9.0elastic/elasticsearch:9.0from

jonathan-buttner:backport/9.0/pr-123639jonathan-buttner/elasticsearch:backport/9.0/pr-123639Copy head branch name to clipboard