Merge branch 'migrate-gl-table' into 'master'

Migrated css class table to gl-table in admin dashboard user stats

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/139608



Merged-by: Nicolas Dular <ndular@gitlab.com>
Approved-by: Ezekiel Kigbo <3397881-ekigbo@users.noreply.gitlab.com>
Approved-by: Nicolas Dular <ndular@gitlab.com>
Co-authored-by: Ted Tran <tedtran2019@gmail.com>