fix(forms/condition-engine): Extend the visibility of the parent section to its child elements

[ccailly]

Checklist before requesting a review

Please delete options that are not relevant.

• I have read the CONTRIBUTING document.
• I have performed a self-review of my code.
• I have added tests that prove my fix is effective or that my feature works.
• This change requires a documentation update.

Description

This pull request improves the visibility logic for form blocks in the condition engine and adds new functional tests to ensure correct behavior when parent sections are hidden. The main focus is to ensure that child blocks (like comments and questions) are only visible if their parent section is visible.