The `target: serverless` config was deprecated a year ago starting in
[Next.js 12](https://nextjs.org/blog/next-12).
Tests were disabled in #41252 so we can now remove `target: serverless`
and all usage of `target` in `next.config.js`.
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Currently `new URL()` for server assets is completely broken because of the `publicPath` that is used for them too. `new URL()` for SSR is broken on windows as it's using absolute urls on the windows filesystem. And `new URL()` is using an incorrect filename
* Place all `asset`s correctly in `/_next/static/media` with `[name].[hash:8][ext]`
* Added a separate runtime chunk for api entries, without `publicPath`
* Introduce separate layer for api entries, which uses server-side URLs.
* Otherwise new URL() will return a faked relative URL, that is identical in SSR and CSR
* Disables react-refresh for api entries
Fixes#27413
## Bug
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes
