Merge branch '435623-improve-coverage' into 'master'

Improve test coverage for app/models/user.rb

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/147606



Merged-by: Aaron Huntsman <ahuntsman@gitlab.com>
Approved-by: Gregory Havenga <11164960-ghavenga@users.noreply.gitlab.com>
Approved-by: Aaron Huntsman <ahuntsman@gitlab.com>
Co-authored-by: j.seto <jseto@gitlab.com>