Remove react-animated-numbers dependency which caused production-only crashes due to CommonJS/ESM interop issues with Vite's production bundler. Replace animated score displays with simple toLocaleString() formatting.
Also add missing +config.ts to disable SSR for the leaderboard page, fixing 307 redirect loop caused by SSR/prerender configuration mismatch.
Changes:
- Remove react-animated-numbers from package.json
- Add web/pages/leaderboard/+config.ts with ssr: false
- Replace AnimatedNumbers component with direct number formatting
- Simplify leaderboard score display (no animation, instant render)
