Fix mapathon list loading

[opyh]

🖊️ Description

💡 What? Why? How?

This fixes loading the mapping event list.

📎 Related Ticket

https://app.asana.com/1/1200321573365931/project/1208833037492986/task/1211034077235092

⚠️ Creation checklist

Before creating this merge request, go over the following checklist (click to expand).
Remove any items that are not applicable.

💪 I have tested my code

• A new E2e playwright test covers this feature / A new test that reproduces the bug passes now.
• The feature deployment works.
• The automated tests are passing.
• I have manually tested this feature
  • on mobile
  • by using keyboard-only navigation
  • with a screen reader (VoiceOver is fine)
  • in Chrome
  • in Firefox
  • in Safari

🧼 I have cleaned up my code

- [x] I have removed dependencies that were just for testing. - [x] I have removed debug logging. - [x] My code does not generate new warnings. - [x] My code does not depend on new vulnerable packages. - [ ] The commit messages are precise and make sense (rebase the PR with `--interactive` if applicable, keeping commits in sensible chunks if possible).

🔍 I have performed a self-review of my code

• My code is self-documenting or has links to necessary documentation.
• New function and variables names can be understood by new developers with basic project knowledge.
• The feature fits the design.

✨ I have created a nice pull request

• It has a clear title.
• It follows the template, has a clear description and testing instructions if needed.
• It references applicable Asana tickets.
• It targets the right branch.
• I removed not applicable sections of the PR template.
• [optional] I added a GIF of my favorite animal to the PR description to lighten the mood of my colleagues.

📝 I updated the documentation

• I updated the documentation in this repository.
• I updated the tech manual.
• I updated the manual testing plan of the app so that it includes a testing flow for this feature.

🔍 Reviewing

When reviewing this merge request, here are some things to keep in mind:

• GitLab Code Review Guidelines
• Conventional Comments

🔬 Testing instructions

• Open https://wheelmap.org/events to see the issue (an error message appears)
• Open https://fix-mapathon-list-loading.wheelmap.tech/events?appId=wheelmap.org to see that the fix works (a mapping events list appears instead of the error)