fixup! feat: make preview conversion timeout and max file size configurable

Author: juliusknorr

lib/Preview/Office.php

@@ -38,11 +38,11 @@ public function isAvailable(FileInfo $file): bool {
 
 	#[\Override]
 	public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
-		if ($file->getSize() === 0) {
+		$fileSize = $file->getSize();
+		if ($fileSize === 0) {
 			return null;
 		}
 
-		$fileSize = $file->getSize();
 		$maxFileSize = $this->appConfig->getPreviewConversionMaxFileSize();
 		if ($fileSize > $maxFileSize) {
 			$this->logger->debug('Skipping preview conversion: file size {size} exceeds limit {limit}', [