Revert "When inserting Cat::Req::REST, always add trait, rather than sometimes using...

Revert "When inserting Cat::Req::REST, always add trait, rather than sometimes using the Cat::Req::REST class directly."

This reverts commit 15f4af0ef06d11960e6cb9a4bbebf2ec1ac19a54.

This is because if we're always an anon class, then the dumped output is
HORRIBLE. Yes, we should fix the dumper to be Moose aware, but I also
have no problem with this logic as it used to be..