Merge branch '411446-prevent-removing-the-default-organization' into 'master'

Resolve "Prevent removing the default organization"

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/124831



Merged-by: Mayra Cabrera <mcabrera@gitlab.com>
Approved-by: Rutger Wessels <rwessels@gitlab.com>
Approved-by: Mayra Cabrera <mcabrera@gitlab.com>
Reviewed-by: Mayra Cabrera <mcabrera@gitlab.com>
Co-authored-by: Manoj M J <mmj@gitlab.com>