fix: double broadcast on exchange flow [LIVE-15840]

[Justkant]

✅ Checklist

• npx changeset was attached.
• Covered by automatic tests. We still need to manually test swaps
• Impact of the changes:
  • Swap live-app

📝 Description

Fix double broadcast that could happen on the exchange flow as the useEffect deps could change

❓ Context

• JIRA or GitHub link: LIVE-15840

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🧐 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)

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4 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
ledger-live-github-bot	⬜️ Ignored (Inspect)			Jan 21, 2025 11:20am
native-ui-storybook	⬜️ Ignored (Inspect)			Jan 21, 2025 11:20am
react-ui-storybook	⬜️ Ignored (Inspect)			Jan 21, 2025 11:20am
web-tools	⬜️ Ignored (Inspect)			Jan 21, 2025 11:20am

[live-github-bot]

Desktop Bundle Checks

Comparing 19b9e07 against 2b2cd2f.

⚠️ renderer bundle size significantly increased: 38mb -> 38.1mb. Please check if this is expected.

[sprohaszka-ledger]

👍