fix: enable React Router v7 future flags

[bhavikcodes]

Description

• Enabled React Router v7 future flags to suppress console warnings and align routing behavior with upcoming changes.

Fixes: #268

Checklist

• Verified the app runs locally without errors
• Confirmed no React Router warnings appear in the console

Additional Notes

• The warning is not consistently reproducible locally, but this change follows the official React Router recommendation for future compatibility.

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