Previous data is not shown to the user when reloading allthough it was saved correctly

[spaenleh]

Description

Existing answer data is not shown to the user.

Steps to reproduce

1. create an instance of the app: https://apps.graasp.org/75438e6e-8442-4ffe-9a16-d1bebf5f8952/latest/index.html
2. add a question
3. go to the player view
4. answer the question
5. verify that the respons is saved by refreshing the builder view
6. reload the player view
   The previous answer is not shown, instead the field is empty and you can submit a new answer