fix nonce not being set correctly for tx requests

[m-aboelenein]

🔘 PR Type

What kind of change does this PR introduce?

• [x] Bugfix
• [ ] Enhancement
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no API changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

Issue Link: #ENG-3456

🔄 Changes

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Impact:

• Explain the broader impact of these changes.
• How it improves performance, fixes bugs, adds functionality, etc.

🖼 Screenshot / 📹 Video

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✅ Review checklist

Please ensure the following are true before merging:

• [ ] Code Style is consistent with the project guidelines.
• [ ] Code is readable and well-commented.
• [ ] No unnecessary or debugging code has been added.
• [ ] Security considerations have been taken into account.
• [ ] The change has been manually tested and works as expected.
• [ ] Breaking changes and their impacts have been considered and documented.
• [ ] Code does not introduce new technical debt or issues.

[github-actions[bot]]

Test with build here: https://github.com/secretkeylabs/xverse-web-extension/actions/runs/7250022113