Merge branch '435741-add-initial-onboarding_status' into 'master'

Add onboarding_status to user_details and implement use

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141932



Merged-by: Andy Soiron <asoiron@gitlab.com>
Approved-by: Serhii Yarynovskyi <syarynovskyi@gitlab.com>
Approved-by: Ross Byrne <robyrne@gitlab.com>
Approved-by: Andy Soiron <asoiron@gitlab.com>
Approved-by: Bob Van Landuyt <bob@gitlab.com>
Reviewed-by: Bob Van Landuyt <bob@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Serhii Yarynovskyi <syarynovskyi@gitlab.com>
Co-authored-by: Doug Stull <dstull@gitlab.com>