create_temporary_url

Create a temporary address that shows a domain's site on our servers before the domain's DNS points here (or when the customer uses other nameservers). Use it right after installing WordPress or building a site on a domain that does not resolve here yet — an install result saying dnsPointsHere: false means call this in the same turn — and whenever the customer says "I can't see my site", "sidan visas inte", "the domain shows the old host". Pass the domain as input. Returns previewUrl (open it — no DNS change needed; WordPress works through it unchanged, nothing to switch back later) and expiresAt (valid about 60 days).