fix: Error in payment return when the order payment was not retrieved

[Benjamin-Freoua-Alma]

Reason for change

Linear task

Code changes

How to test

As a reviewer, you are encouraged to test the PR locally.

Test in the merchant env. Tu reproduce the test, you need to throw Exception in the function getOrderPayment() in OrderHelper Class and create a full payment with the return page.

Checklist for authors and reviewers

• The title of the PR uses business wording, not technical jargon, for the changelog readers to understand it
• The PR implements the changes asked in the referenced task / issue
• You understand the impact of this PR on existing code/features
• The changes include adequate logging and Datadog traces
• Documentation is updated (API, developer documentation, ADR, Notion...)

Non applicable

• The automated tests are compliant with the testing strategy
• The tests are relevant, and cover the corner/error cases, not only the happy path

[github-actions]

⏳E2E tests are currently running.
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[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

❌ E2E tests have failed.
➡️ You can find the results here.

[github-actions]

❌ E2E tests have failed.
➡️ You can find the results here.