🧹 Remove commented-out TanStackRouterDevtools code in __root.tsx

[Twinber]

🎯 What: Removed the commented-out TanStackRouterDevtools import and usage in src/routes/__root.tsx.
💡 Why: Removing commented-out code improves the readability and maintainability of the route file by removing unnecessary clutter.
✅ Verification: Ran npm run build to verify the project still builds successfully without errors.
✨ Result: Cleaner and more maintainable src/routes/__root.tsx file.

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PR created automatically by Jules for task 5777404201999231408 started by @Twinber

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