correction on surveys

I think there were tiny changes that got lost with the merge. The sample question didn't appear first, and a const variable was defined twice in the same place.

There is still a bug, but it doesn't cause the app to malfunction. When it's the end of the survey, and we get to the special group there is two errors in the console. I think it's maybe due to the fact that with derived variable could get updated one time to much (I'm really not sure, e.g. let type = $derived(currentQuestion.question.split(':')[0]); if currentQuestion isn't defined .question won't work). I can keep looking at that tomorrow.