Fix Jest setupFilesAfterEnv path resolution for CI

- Use explicit path <rootDir>/node_modules/@testing-library/jest-dom
- Resolves module resolution issues when Jest runs from workspace directory
- Fixes "Module @testing-library/jest-dom was not found" error in CI

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: AbanoubGhadban

jest.config.mjs

@@ -14,7 +14,7 @@ export default {
   }),
   testEnvironment: 'jsdom',
   setupFiles: ['<rootDir>/node_package/tests/jest.setup.js'],
-  setupFilesAfterEnv: ['@testing-library/jest-dom'],
+  setupFilesAfterEnv: ['<rootDir>/node_modules/@testing-library/jest-dom'],
   // React Server Components tests require React 19 and only run with Node version 18 (`newest` in our CI matrix)
   moduleNameMapper:
     nodeVersion < 18