We are not doing anything with question intro text

## Description

Users have pointed out that the question intro text is not being used and this is confusing

Can we either clearly document that this is the case, or explore how to include it in Harmony

Start by locating where question intro text is represented and where questionnaire items are processed in Harmony. Determine whether the intended outcome is documentation or inclusion in Harmony; done when one choice is agreed and either the behavior is clearly documented or the intro text is included.

Written by the indexing model from the issue text.