fix: increase min-width of nonce field

[iamacook]

What it solves

Increase min-width of nonce field

How this PR fixes it

The "base" min-width of the nonce field has been increased to 4 characters as per design request.

How to test it

Create a transaction and observe the increased min-width of the nonce field.

Screenshots

Checklist

• I've tested the branch on mobile 📱
• I've documented how it affects the analytics (if at all) 📊
• I've written a unit/e2e test for it (if applicable) 🧑‍💻

[github-actions]

Branch preview

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https://nonce_char_width--walletweb.review-wallet-web.5afe.dev

[github-actions]

ESLint Summary View Full Report

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Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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^{Report generated by eslint-plus-action}

[usame-algan]

I don't mind if the input is a bit wider but since we have the space now, is it possible to not make it jump when the reset button appears? I believe its already absolutely positioned but somehow there is still a jump.