That law was simply re-passed with the clause "has moved in or otherwise affects interstate commerce." as noted on the link.

A similar clause could be attached to the mentioned zoning law. (E.g. a person from one state buys land in another state? No zoning allowed - and because buying land within a state affects the prices for interstate purchases, suddenly there’s a nexus for regulation of purely intrastate purchases too!)

Not saying it’s a great idea, but it’s hardly clearly unconstitutional under modern precedent and interpretation.