Turbopack: `require(/* turbopackChunkingType: parallel */` (#91278)
1. Add the CJS version of `import ... with {"turbopack-chunking-type: "parallel"`
2. Allow `shared` as a chunking type
3. Improve error message for invalid values:
<img width="718" height="455" alt="Bildschirmfoto 2026-03-13 um 15 07 06" src="https://github.com/user-attachments/assets/bc1efb43-4cc1-4885-b253-49c1e58b3add" />