Cloudflare D1 template does not serve static assets

[taobojlen]

The Cloudflare D1 template (and likely the Cloudflare template too!) does not serve any static assets when you build & deploy it.

To reproduce:

• Clone the template and cd into the folder
• Make the change described in Cloudflare D1 Template - node:async_hooks error #2 to get builds to work
• npm install && npm run build && npm start
• Visit http://localhost:8787. In your terminal logs you'll see things like

[wrangler:inf] Ready on http://localhost:8787
[wrangler:inf] GET / 200 OK (44ms)
✘ [ERROR] Error: No route matches URL "/assets/entry.client-65eIbm27.js"
[wrangler:inf] GET /assets/entry.client-65eIbm27.js 404 Not Found (8ms)
[wrangler:inf] GET /assets/chunk-7R3XDUXW-BhZqBB9S.js 404 Not Found (12ms)
[wrangler:inf] GET /assets/root-Bn4Ngxxb.css 404 Not Found (12ms)
[wrangler:inf] GET /assets/with-props-CjRNnwNJ.js 404 Not Found (15ms)
[wrangler:inf] GET /assets/root-Dj4aptwQ.js 404 Not Found (15ms)
[wrangler:inf] GET /assets/home-BgHCt-4A.js 404 Not Found (15ms)
[wrangler:inf] GET /assets/logo-dark-pX2395Y0.svg 404 Not Found (3ms)
[wrangler:inf] GET /assets/logo-light-CVbx2LBR.svg 404 Not Found (3ms)

If you run things in dev with npm run dev, static assets are served correctly, but it breaks when you try to actually deploy it.