Thibault Delavallée
c7dff653d5
Since e9734f4975 assignation is now a notification sent in the
inbox or by email to the newly-assigned responsible. It is therefore
considered as not necessary to link a subtype to the assignation itself.
Indeed having it logged in the discussion history as a classic tracking
in addition to the notification is considered as sufficient.
This commit is related to task ID 60790. Closes #23244 .