Use correct afterPortlet function

renderAfterPortlet just dumps it on the page. This is bad for timeless.
getAfterPortlet gets. This is good for timeless.

Change-Id: I1e0a3674644edb4c279814a4a372207bfdcbff4b

TimelessTemplate.php

@@ -206,7 +206,7 @@ class TimelessTemplate extends BaseTemplate {
 			) .
 			Html::rawElement( 'div', [ 'class' => 'mw-portlet-body' ],
 				$contentText .
-				$this->renderAfterPortlet( $name )
+				$this->getAfterPortlet( $name )
 			)
 		);