Wrong ngApCause in session release
Issue
When releasing a PDU session, the AMF sends ngApCause "radioNetwork", but it should contain group/value (see 29.502)
Reproduce
Start the docker-compose-basic-vpp-nrf.yaml. Start docker-compose-gnbsim-vpp.yaml and set DEREG_AFTER to 10
It may only work to receive a 400 Bad Request in the SMF edge computing branch, but you should still see that AMF is sending the wrong field.