Fix: prevent double ./cjs/ prefix in main field + fix imports

- Build script was adding ./cjs/ prefix even when main already had it
- Fixed @testing-library/react dependency for tests
- Changed package-style imports to relative imports in rootJs/index.ts
- Bump version to 0.85.5

packages/dev/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Do not edit, auto-generated by @pezkuwi/dev
 
-export const packageInfo = { name: '@pezkuwi/dev', path: 'auto', type: 'auto', version: '0.85.4' };
+export const packageInfo = { name: '@pezkuwi/dev', path: 'auto', type: 'auto', version: '0.85.5' };