I didn't think Huawei had released a certified Android device in many years now, as I don't believe Google would be allowed to act as a supplier to them even if they wanted to.

Back around the Nexus 6P they probably got an exception as Google tried to promote more competition for what was rapidly turning into a Samsungopoly. Samsung later themselves negotiated a position where they could make other changes in ways Google didn't approve of, and that was by leveraging the threat of going all-in on Tizen.