Unset the default hostname

PUT https://api.replicated.com/vendor/v3/app/{app_id}/custom-hostname/default/unset

Remove the default custom hostname for a specific app and service (registry, proxy, download portal, or replicated app).
After unsetting, the system will fall back to the replicated hostname for that service if a custom hostname is not set for a channel.

Required RBAC Policy: kots/app/[:appid]/customhostname/default/unset