Add local prerender matcher diagnostics
## Summary
- Print the effective not-found, blocking, fallback, and prerender entries produced for experimental matcher routes.
- Include the corresponding deployment route patterns for local semantic evaluation.
- Keep the diagnostic output isolated in a removable commit so it does not need to ship with the feature.
## Verification
- `pnpm --filter=next build`
- `pnpm test-start-turbo test/e2e/app-dir/generate-prerender-matching/generate-prerender-matching.test.ts`
