[BUGFIX] Set extension name in Fluid context

Resolves: #84697
Related: #83987
Releases: master
Change-Id: I292b5942144c1453921ba7ce490e26209dee187f
Reviewed-on: https://review.typo3.org/56635


Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>

typo3/sysext/viewpage/Classes/Controller/ViewModuleController.php

@@ -72,6 +72,7 @@ class ViewModuleController
     protected function initializeView(string $templateName)
     {
         $this->view = GeneralUtility::makeInstance(StandaloneView::class);
+        $this->view->getRequest()->setControllerExtensionName('Viewpage');
         $this->view->setTemplate($templateName);
         $this->view->setTemplateRootPaths(['EXT:viewpage/Resources/Private/Templates/ViewModule']);
         $this->view->setPartialRootPaths(['EXT:viewpage/Resources/Private/Partials']);