[TASK] Fix PHPStan errors

Classes/ViewHelpers/PictureViewHelper.php

@@ -224,7 +224,7 @@ class PictureViewHelper extends AbstractViewHelper {
 		}
 
 		$originalFile = $image;
-		if (!($originalFile instanceof File)) {
+		if (!($originalFile instanceof File) && method_exists($image, 'getOriginalFile')) {
 			$originalFile = $image->getOriginalFile();
 		}
 
@@ -315,7 +315,7 @@ class PictureViewHelper extends AbstractViewHelper {
 			}
 		}
 
-		$titleAsAttribute = $title ? ' title="' . htmlspecialchars($title ?? '') . '"' : '';
+		$titleAsAttribute = $title ? ' title="' . htmlspecialchars($title) . '"' : '';
 		$loadingDirective = '';
 		if (isset($arguments['loadingDirective']) && $arguments['loadingDirective'] !== 'none') {
 			$arguments['loadingDirective'] = $arguments['loadingDirective'] !== '' ?
@@ -327,7 +327,7 @@ class PictureViewHelper extends AbstractViewHelper {
 			$sources .
 			'<img ' . $idAsAttribute . ' class="image-embed-item ' . $class . '"' .
 			$widthAsAttribute . $heightAsAttribute . $titleAsAttribute .
-			' alt="' . htmlspecialchars($alternative ?? '') . '" src="' . $imageUrl . '"' . $loadingDirective . ' />' .
+			' alt="' . htmlspecialchars($alternative) . '" src="' . $imageUrl . '"' . $loadingDirective . ' />' .
 			'</picture>';
 	}