Recent changes to creating a developer environment from PPAC restrict Admins to 3 just like a self service sign up.

Admins are required to create many environments, for a number of projects that don't always want the developer environments to be assigned to a person, as they come and go.

Admins provisioning environments is NOT the same as some that wants to mess around and try something, where 3 personal environments is reasonale.

Remove the 3 environment limit for Developer environments when created in PPAC by Power Platform Admins.

Also, AUTO provision the trial SKU so admins don't have to ask a Global Admin to assign licenses.