fix: Unable to scroll until multiple comments (#7112)

* fix: Unable to scroll in comments
fix: Missing highlighted text on first comment while composing

* docs

app/scenes/Document/components/Comments.tsx

@@ -42,7 +42,6 @@ function Comments() {
     .threadsInDocument(document.id)
     .filter((thread) => !thread.isNew || thread.createdById === user.id);
   const hasComments = threads.length > 0;
-  const hasMultipleComments = comments.inDocument(document.id).length > 1;
 
   return (
     <Sidebar
@@ -52,7 +51,6 @@ function Comments() {
     >
       <Scrollable
         id="comments"
-        overflow={hasMultipleComments ? undefined : "initial"}
         bottomShadow={!focusedComment}
         hiddenScrollbars
         topShadow