Geo: Blob removal doesn't work for SSF blobs

https://gitlab.com/gitlab-org/gitlab/-/blob/60e36e72180f317ac5ca73c74ac9360490ec87b1/ee/lib/gitlab/geo/replicator.rb#L245 this line will be called for deleted items and it will fail. Unfortunately, our tests do not test this properly because model_record_id is nil as we use Factory's build instead of create. It's not a super critical issue as it may seem because we have a RegistryConsistency worker that will clean up things later anyway.