IssueNotesRefactor: Wrap comment form with needed element.

app/assets/javascripts/notes/components/issue_comment_form.vue

@@ -137,6 +137,7 @@ export default {
       v-if="isLoggedIn"
       class="notes notes-form timeline new-note">
       <li class="timeline-entry">
+        <div class="timeline-entry-inner">
           <div class="timeline-icon hidden-xs hidden-sm">
             <user-avatar-link
               v-if="author"
@@ -233,6 +234,7 @@ export default {
               </a>
             </div>
           </div>
+        </div>
       </li>
     </ul>
   </div>