Custom proposal fields and amendments

[simonaszilinskas]

Describe the bug
When the custom proposal fields feature of Decidim Awesome is applied to a proposals component, the amendments appear with code.

To Reproduce
Steps to reproduce the behavior:

1. Using an Admin account: Create custom proposal fields and apply it to a proposal component.
2. Click on 'New proposal and submit a proposal.
3. Once the proposal (with the extra fields) is submitted via Decidim Awesome, log in with another account, click on "edit the proposal," and submit an amendment.
4. See error

Expected behavior
The amendment submitted on a proposal created via the Decidim Awesome custom proposal should display normally without all the tags.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
N/A