fix(web): resolve leaderboard production crashes by removing react-animated-numbers

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)

web/pages/leaderboard/+config.ts

@@ -0,0 +1,6 @@
+import type { Config } from "vike/types";
+
+export default {
+  prerender: true,  // Generate static HTML for deployment
+  ssr: false,       // Force client-side only rendering
+} satisfies Config;