[BUGFIX] Avoid data array to be null in CObjectViewHelper

The CObjectViewHelper didn't render IMAGE-objects with
GIFBUILDER properly.

This change avoids the data array in the renderStatic
method of the CObjectViewHelper to be null.

Resolves: #103863
Related: #102931
Releases: main
Change-Id: I7ddbbafbae3d835ecae05c5781e27c633f7441ce
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84320


Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>

typo3/sysext/fluid/Classes/ViewHelpers/CObjectViewHelper.php

@@ -116,7 +116,7 @@ final class CObjectViewHelper extends AbstractViewHelper
      */
     public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext): string
     {
-        $data = $renderChildrenClosure();
+        $data = $renderChildrenClosure() ?? [];
         $typoscriptObjectPath = (string)$arguments['typoscriptObjectPath'];
         $currentValueKey = $arguments['currentValueKey'];
         $table = $arguments['table'];