Cannot replace in c.file metadata when it does not exist

[freekh]

We're seeing errors when trying to run npx val validate --fix on with this:

import { c, s } from "../val.config";

export default c.define(
"/app/remove.val.ts",
s.record(s.object({ file: s.file() })),
{
"/remove": {
file: c.file("/public/val/test.avif"),
},
},
);