fix(turbopack): `react-dom/server` in rsc context (#61165)
### What?
Probably not the right solution, next.js disables the `react-server`
import condition in there somehow I think
### Why?
Resend uses `@react-email/render` which uses `renderToString` from
`react-dom/server`.
Unfortunately importing `react-dom/server` with the `react-server`
import condition leads to a broken bundle (which seems like a bug in
react?).
Closes PACK-2243
Fixes #57936
