Investigate require patch

[vicb]

We currently have to patch require

https://github.com/dario-piotrowicz/poc-build-nextjs-app-for-cf-workers/blob/6cc9bf4a3e4b0c0673b0c9fac22912445baa734a/nextjs-worker-builder/src/build/build-worker/patches/investigated/patchRequire.ts

@jasnell implemented module.createRequire in cloudflare/workerd#2636

Looking at evanw/esbuild#1921, it looks like the banner can be updated to something similar to

import { createRequire } from 'module';
const require = createRequire(import.meta.url);

There are a few things to solve here:

1. unenv

unenv should only mock module when methods are not implemented - that is createRequire and isBuiltin should use the workerd implementation when it is present (/cc @pi0)

2. workerd has no access to import.meta.url