CSV User Import and Invitation to create passwords

Description:

After a successful CSV import the system is inviting users to the login page and not asking them to create a password.

Steps to reproduce:

1. Go though the CSV import (the flat zip file has only users, nothing else)

Expected behavior:

1. The system should send out invitation emails
2. Users that click on the button should be taken to a page where they are asked to create a password

Actual behavior:

It seems the system is sending "Registration" emails and not "Invitation" emails (which doesn't make any difference as the URLs for the buttons are the same).
Users are not getting asked to create a password, they are actually brought to a login page and that's it.
Obviously they can't login as they don't have a password.

Server Setup Information:

• Version of Rocket.Chat Server: 0.71.1 (Originally 0.70.4)
• Operating System: Linux x64
• Deployment Method: tar
• Number of Running Instances: 1
• DB Replicaset Oplog: Disabled
• NodeJS Version: 8.11.3 - x64
• MongoDB Version: v3.6.8

Additional context

Relevant logs:

Start with the CSV import flow and follow how it selects registration versus invitation emails and their links into the login and password-creation pages. Reproduce the import with a users-only flat ZIP and verify that the invitation link leads each user to create a password before login.