Stop build warning about `experimental: { esmExternals: 'loose' }` (#40377)
Stop build warning about `experimental: { esmExternals: 'loose' }` (#40377)

Fixes #40368.

## Bug

- [x] Related issues linked using `fixes #number`
- [ ] ~~Integration tests added~~ [none applicable]
- [ ] ~~Errors have helpful link attached, see `contributing.md`~~ [no new errors]
JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js