[Fix] Display width for richtext fields

[jdurand-teclib]

• I have performed a self-review of my code.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• It fixes !46327
• Here is a brief description of what this PR does
  • Adapt field and input classes to cover all row in case of a presence of a richtext field

Screenshots (if appropriate):

Before (from customer's instance)

After (local instance)