Merge branch '424709-increase-sign-up-helper-use' into 'master'

Improve use of sign up helper in feature specs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/132138



Merged-by: Doug Stull <dstull@gitlab.com>
Approved-by: Jay Montal <jmontal@gitlab.com>
Approved-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Reviewed-by: Jay Montal <jmontal@gitlab.com>
Co-authored-by: Ross Byrne <robyrne@gitlab.com>