This fixes that type in the website template:
3d86bf1974/templates/website/src/app/components/RichText/serialize.tsx (L24)
Now, JsonObject still ensures that only objects can be passed, but it's
weak enough to allow non-dynamic types like the ones we generate in
payload-types.
The "JSON" part of this type has no meaning anymore, as it does allow
objects with functions now. However, we can still use it to signal to
the user that this should be JSON-serializable. It's more clear than
just using Record<string, unknown>
c2b2f10676