Merge branch 'ag/433996-public-groups-show-when-have-unlimited-seat-count' into 'master'

Display when Namespaces have unlimited seat count

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/173000



Merged-by: Sheldon Led <sheldonled@gitlab.com>
Approved-by: Tim Noah <tnoah@gitlab.com>
Approved-by: Diana Zubova <dzubova@gitlab.com>
Approved-by: Sheldon Led <sheldonled@gitlab.com>
Reviewed-by: Angelo Gulina <agulina@gitlab.com>
Reviewed-by: Sheldon Led <sheldonled@gitlab.com>
Reviewed-by: Diana Zubova <dzubova@gitlab.com>
Co-authored-by: Angelo Gulina <agulina@gitlab.com>