Merge branch '448877-organization-group-form-ux-improvements' into 'master'

UI updates to new group from at organization level

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/148911



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Mike Nichols <mnichols@gitlab.com>
Approved-by: Serhii Yarynovskyi <syarynovskyi@gitlab.com>
Approved-by: Scott Hampton <shampton@gitlab.com>
Approved-by: Tarun Vellishetty <tvellishetty@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Peter Hegman <phegman@gitlab.com>