Add specs for not sending the user cap email
With !53489 (merged) an email gets send when the user cap was reached. During the review it was noted that the specs for not sending that email are missing. One spec that covered not sending an email in another use case was deleted with a change.
Specs for not sending the user cap email should be added for when the user cap is set to nil
and when it hasn't been reached yet.
Edited by Corinna Gogolok