[BUG] User records not created for new Core BB users

[shurwit]

Describe the bug
Currently when a Core BB user uses the Groups BB for the first time we are not creating a record in the users collection as expected. This will likely cause issues with our implementation of the managed grroup synchronization.

To Reproduce
Steps to reproduce the behavior:

1. Create empty databse
2. Run Groups BB
3. Login with Core BB token
4. See that no user record was created

Expected behavior
When a user uses the groups BB for the first time we should create a user record for them to store their Core BB account data.