Getting single custom role through graphQL does not work for self-managed

When on self-managed we have custom roles without group, just for the whole instance.

Getting a single role using graphQL does not work due to permissions check in the finder.

graphql query to get a single role:

{
  memberRole(id: "gid://gitlab/MemberRole/18") {
    id
    name
    readVulnerability
    readCode
    adminGroupMember
  }
}