Merge branch '429669-frontend-remove-namespace-catalog' into 'master'

Frontend: Remove namespace catalog

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/140725



Merged-by: Jarka Košanová <jarka@gitlab.com>
Approved-by: Mireya Andres <mandres@gitlab.com>
Approved-by: Payton Burdette <pburdette@gitlab.com>
Approved-by: Laura Montemayor <lmontemayor@gitlab.com>
Approved-by: Jarka Košanová <jarka@gitlab.com>
Approved-by: Avielle Wolfe <awolfe@gitlab.com>
Reviewed-by: Mireya Andres <mandres@gitlab.com>
Co-authored-by: Briley Sandlin <bsandlin@gitlab.com>