use valid user/org names
see https://github.com/huggingface/moon-landing/pull/8742 (internal)

It also re-enables tests skipped in https://github.com/huggingface/datasets-server/pull/2318
use valid user/org names: see https://github.com/huggingface/moon-landing/pull/8742 (internal)

It also re-enables tests skipped in https://github.com/huggingface/datasets-server/pull/2318