fix: improve ledger sync tests

[KVNLS]

✅ Checklist

• npx changeset was attached.
• Covered by automatic tests.
• Impact of the changes:
  • ...

📝 Description

Fix usage of await in integration tests.

❓ Context

• JIRA or GitHub link:

---

🧐 Checklist for the PR Reviewers

• The code aligns with the requirements described in the linked JIRA or GitHub issue.
• The PR description clearly documents the changes made and explains any technical trade-offs or design decisions.
• There are no undocumented trade-offs, technical debt, or maintainability issues.
• The PR has been tested thoroughly, and any potential edge cases have been considered and handled.
• Any new dependencies have been justified and documented.
• Performance considerations have been taken into account. (changes have been profiled or benchmarked if necessary)

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

5 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
ledger-live-docs	⬜️ Ignored (Inspect)			Oct 1, 2024 10:25am
ledger-live-github-bot	⬜️ Ignored (Inspect)			Oct 1, 2024 10:25am
native-ui-storybook	⬜️ Ignored (Inspect)			Oct 1, 2024 10:25am
react-ui-storybook	⬜️ Ignored (Inspect)			Oct 1, 2024 10:25am
web-tools	⬜️ Ignored (Inspect)			Oct 1, 2024 10:25am