Fix passing page id in ToolboxController - but keep viewArray Key

non breaking change for Templates of passing page id in ToolboxController

This is a Backport of kitodo#1372 for 5.0.x Branch

Author: fschoelzel

Classes/Controller/ToolboxController.php

@@ -480,7 +480,7 @@ private function renderSearchInDocumentTool(): void
             'labelHighlightWord' => $this->settings['highlightWordInputName'],
             'labelEncrypted' => $this->settings['encryptedInputName'],
             'documentId' => $this->getCurrentDocumentId(),
-            'documentPageId' => $this->document->getPid(),
+            'documentPageId' => $this->request->getAttribute('routing')->getPageId(),
             'solrEncrypted' => $this->getEncryptedCoreName() ? : ''
         ];