[8.18] Permanently switch from SecurityManager to Entitlements (#124865)#125073

elasticsearchmachine merged 2 commits intoelastic:8.18elastic/elasticsearch:8.18from

ldematte:backport/8.18/entitlements/always-enabled-minimalldematte/elasticsearch:backport/8.18/entitlements/always-enabled-minimalCopy head branch name to clipboard