Bug: POST /projects with the same "id" silently rewrites previously created projects with the same id

Description

Current behavior: if a project with the same id exists, the operation silently rewrites it Expected behavior: reject project recreation. Return code 409 CONFLICT and explanatory message, e.g.: "A project with ID xyz already exists and cannot be rewritten. Repeat with an unique id or without id to autogenerate it".

Acceptance criteria

See expected behavior

Testing scenarios

Try to create a project with the same id. Make sure the attempt is rejected

Technical notes