fix: Show recommended nonce when nonce is 0, fix msgSummary layout

[usame-algan]

What it solves

Fixes #2546 (comment), #2546 (comment)

How this PR fixes it

• Checks the recommendedNonce for undefined
• Adds correct css class to MsgSummary

How to test it

1. Create a new transaction in a new safe
2. Observe the nonce form showing 0
3. Go to Messages with existing messages there
4. Observe no overlaps

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

✅ Deploy successful!

https://fix_nonce--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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