feat: add "Transaction is executed" to stepper

[iamacook]

What it solves

Resolves #2300

How this PR fixes it

A new "Transaction is executed" step has been added to the success screen of the new transaciton flow according to the desings.

How to test it

Create and execute a transaction, observing the new step.

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://transaction_executed--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}

[francovenica]

LGTM