Transmission rpc error on fresh installation (21.02.1)

transmission starts with a user transmission, not root, when run as a service, the corresponding settings.json is then stored in /tmp/transmission, this appears to be working, and populate correctly.

however the daemon needs to be enabled in /etc/config/transmission, to be able to start it as a service.

the default value's option enabled 0, and needs to be set to 1.