Simple dual-deployment to Cloudflare (and Vercel/Netlify/etc)

Is it possible to dual-deploy to Cloudflare and other environments? Out of the box: - `sv create` deployment to Cloudlflare fails - `create-cloudflare`deployment to Vercel/Netlify/etc fails This recipe shows the minimal work required to enable successful Cloudflare deployment (without wrangler!) Your project will also continue to deploy to Vercel/Netlify.