fix: show existing comments when commenting is not ongoing

Render the comment section when comments already exist, even if
section.commenting is none. This keeps old comments visible.

Refs KER-601

Author: jorilindell

src/components/SortableCommentList.jsx

@@ -414,7 +414,7 @@ const SortableCommentListComponent = ({
 
   return (
     <div>
-      {section.commenting !== 'none' && (
+      {(section.commenting !== 'none' || showCommentList) && (
         <div className='sortable-comment-list'>
           {closed && section.questions.length >= 1 && (
             <div