Add yarn patch for msw for Node v18 native fetch compatibility

- Basically, `msw` can mostly work with node-native `fetch` powered
by undici, but it does not currently create its lone export `createServer`
with the `FetchInterceptor` that is necessary to intercept `globalFetch`
- Clone the library locally, fix this issue, build it locally, and copy the build
files into this Yarn patch

Upstream, I've started the chain of PRs necessary to fix this:

- mswjs/interceptors#283 (migrate to Node 18)
- milesforks/msw-interceptors#5 (wip, add native fetch tests)
- Last: one line change to msw that I made in our patch here