Adding a user to a team user group with no 'Create repo' or 'Admin' permissions, does not send a notification to the user

Summary

Adding a user to a team user group with no 'Create repo' or 'Admin' permissions, does not send a notification to the user

Steps to Reproduce

1. Go to a Team of yours in Bitbucket >> Manage Team. The User groups page opens.
2. See if you have a User group with no 'Create repo' or 'Admin' permissions. If not, create one.
3. Select Add member.
4. Add a user in the group form step # 2.

Expected Results

The user receives a notification that they've been added to a user group.

Actual Results

The user receives no notification.