CHG-Load also richtext shape without text

It seems tha Powerpoint 2007 use also richtext to define rectangle with or without text. So keep loading richtext without text

Author: devX2712

src/PhpPresentation/Reader/PowerPoint2007.php

@@ -922,9 +922,6 @@ protected function loadShapeDrawing(XMLReader $document, DOMElement $node, Abstr
      */
     protected function loadShapeRichText(XMLReader $document, DOMElement $node, $oSlide): void
     {
-        if (!$document->elementExists('p:txBody/a:p/a:r', $node)) {
-            return;
-        }
         // Core
         $oShape = $oSlide->createRichTextShape();
         $oShape->setParagraphs([]);