hetzner_provisioned_server breaks the *_provisioned_service naming convention
Imported from GitHub issue El-SaMa/oma#99 by @El-SaMa.
Every other adapter uses `{adapter}_provisioned_service` (enhance_provisioned_service, cpanel_provisioned_service). Hetzner alone uses `hetzner_provisioned_server`.
Fix: rename to `hetzner_provisioned_service` for consistency. Breaking change — grep `apps/web` for references (~3-5 expected) before renaming.