Only allow to set up show-hide for a following question or a subsequent page

## Description
Currently it's possible to show a preceding question.
For example: Question 4 can show/hide Question 1
This is a risk to break the experience.

## Steps to reproduce
1. Go to GC Forms
2. Add a short answer Q1
3. Add a radio button Q2
4. Add options
5. Add a rule that links the option from Q2 to Q1

## Details
- **Browser**: Edge
- **Operating system**: Mac
- **Environment**: Staging
- **Language**: Français
- **Viewport**: Tablet

## Expected behaviour
Some constraints that limit the possibility of broken experience
Related #3888

## Screenshots or videos