New Users do not get an email once they are added to a deployment.

[Eve-wanderi]

Describe the bug
New users do not get an email once added to a deployment.

Where was the bug observed
https://lumen.passage.ush.zone/settings/users

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://lumen.passage.ush.zone/settings/users'
   2.Click on settings.
   3.Click on users and add a new user

Expected behavior
New users should get an email notifying them that they have been added to X deployment.

Is there a workaround? What is it.
NO

Screenshots
If applicable, add screenshots to help explain your problem.

URL / Environment where this happened
https://lumen.passage.ush.zone/settings/users

Additional context
Add any other context about the problem here.

[rowasc]

@jrtricafort to prioritize and tag. I don't believe this is a regression, it's not something we have ever done in production as far as I know, but it's kind of annoying and wrong that we don't let people know

cc @Eve-wanderi if this is something that is documented anywhere as a feature, or if this is something that is currently working in production, please let us know and we will assign it to cycle 8 as part of the effort to bring lumen to production

[jrtricafort]

@rowasc P2.

[tuxpiper]

Closing a duplicate of #1421 , which has a fuller convo . Priority passed over to that ticket.