Fix.mock from frontend

[jannisvisser]

Describe your changes

Resolves bug 832.

• Changes the front-end feature to use correct path and body based on disaster-type
• Renames all 'default' scenarios to 'trigger'
• Does not deal with mocking more scenarios than just trigger and no-trigger from front-end, as that goes beyond the scope of merely fixing this bug.

Checklist before requesting a review

• I have performed a self-review of my code
• I have added tests wherever relevant
• I have made sure that all automated checks pass before requesting a review

Notes for the reviewer

1. All API-tests succeed locally (when changing the hostname back to use port 3000 temporarily)
2. I have checked from front-end all disaster-types trigger and no-trigger from at least one country.

[gulfaraz]

I get an error on the UI when I mock ETH flood and ETH malaria. It works for ETH drought. I have not tried other countries.

Screen.Recording.2024-09-30.at.12.28.59_1080.mov

[gulfaraz]

I did not pull the branch code so it didn't have the fix. So you can ignore my previous comment. This PR can be merged.