Merge branch 'selhorn-perms-2' into 'master'

Moved seat details to subscription page

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/104632



Merged-by: Fiona Neill <fneill@gitlab.com>
Approved-by: Fiona Neill <fneill@gitlab.com>
Co-authored-by: Suzanne Selhorn <sselhorn@gitlab.com>