If a member of a DM group has been deleted, the userInfo tab will return UserNotFound each time you click on it

Description:

If a member of a DM group has been deleted, the userInfo tab will return UserNotFound each time you click on it. This happens if the user that has been deleted is the one originally displayed on the userInfo tab in a DM group with >2 users.

Steps to reproduce:

1. Create a DM group with >2 members
2. Try to see the userInfo
3. Delete a user
4. Try to see again the user info

Expected behavior:

You should be able to see the userInfo tab without errors

Actual behavior:

It returns a error each time you try to see the userInfo

https://user-images.githubusercontent.com/45966964/117221234-22664b00-ae09-11eb-83eb-82c3712befc6.mp4

Server Setup Information:

• Version of Rocket.Chat Server: 3.14.0-develop
• Operating System: Linux
• NodeJS Version: 12.21.0 - x64
• MongoDB Version: 4.2.8

Client Setup Information

• Desktop App or Browser Version:
• Operating System:

Additional context

Relevant logs:

Start by reproducing the DM group flow described in the issue: create a group with more than two members, delete the user initially shown in the userInfo tab, and reopen that tab. Trace the userInfo tab entry point and the UserNotFound response. Done means the tab opens without an error after the displayed user is deleted.