fix(ui): improve layout and spacing in Typing Speed Tester modal

[siri-004]

📝 Description

Note: The Typing Speed Tester has undergone functional changes in recent PRs solving issue of responsiveness by adding start button.
This PR is modified UI/UX improvements and spacing fixes, and has been updated to be compatible with the latest version of the game logic.

Improved the overall UI layout and spacing of the Typing Speed Tester modal to provide a cleaner and more compact user experience.

✨ Changes Made

• Reduced excessive whitespace in the modal
• Reorganized stats into a compact responsive layout
• Improved spacing and alignment consistency
• Improved textarea positioning and visibility
• Refined difficulty button sizing and spacing

Before

After

🔗 Linked Issue

Closes #501

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📋 Contribution Checklist

• My code strictly adheres to the project guidelines (Standard library only, procedural code, clean spacing).
• I have verified that my files are placed in the correct directory.
• I have tested my changes thoroughly on my local machine.
• I have included interactive emojis and clean console/UI outputs.
• GSSoC 2026: I have been formally assigned to this issue and noted it above.

[vercel]

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[github-actions]

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