feat: Integrated channels, grade send logic only logs instead of raising when enterprise_customer_user record is inactive

feat: when no enrollment found, log info and return (#1423)

* feat: when no enrollment found, log info and return

instead of raising clientError, since we don't want this case to be regarded as an error

ENT-5207

* fix: had incorrect course and user id

* refactor: lint

* feat: changelog

ENT-5207

* fix: lint