Allow positioning the description in text format fields

Problem/Motivation

Related to this issue: https://www.drupal.org/project/webform/issues/3138039 →

Text format fields don’t support description positioning and it’s not initiative for the user to always display this at the bottom of the field.

Steps to reproduce

Proposed resolution

Could description positioning be supported

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet