Describe the bug
When deleting a debate, comments reported with inappropriate content are not deleted from global moderations and it gives a server error.

To Reproduce
Steps to reproduce the behavior:

1. Create a debate
2. Comment on it
3. Report the comment as inappropriate
4. Delete the debate
5. Go to admin > Global moderations > 💥 "Server error"

Expected behavior
If I delete a debate, any reported comment related to it should be deleted from global moderations.
Extra data (please complete the following information):

• Decidim Version: 0.24