Optimize menu style

[JayJay1024]

PR-Codex overview

This PR focuses on updating the height of various buttons and UI components in the application to ensure a consistent design across different parts of the interface.

Detailed summary

• Updated the height of the button in chain-switch.tsx to 2.125rem.
• Updated the height of the History component in header.tsx to 2.125rem.
• Updated the height of the labelClassName in user.tsx to 2.125rem.
• Adjusted the height of the button in user.tsx to 0.4375rem for consistency.

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Latest commit: 48ebfbb

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[github-actions]

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Commit: 48ebfbb
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Commit: 48ebfbb
Preview: https://helix-apps-test-oz2bkalfu-itering.vercel.app https://helix-dev-testnet.vercel.app