Fix query columns selection in custom query form (#39806).

Patch by Mizuki ISHIKAWA.

git-svn-id: https://svn.redmine.org/redmine/trunk@22610 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/queries/_form.html.erb

@@ -96,7 +96,11 @@
 <% unless params[:calendar] %>
   <%= content_tag 'fieldset', :id => 'columns' do %>
   <legend><%= l(:field_column_names) %></legend>
-  <%= render_query_columns_selection(query) %>
+  <div id="list-definition">
+    <div>
+      <%= render_query_columns_selection(query) %>
+    </div>
+  </div>
   <% end %>
 <% end %>