Allow picture element options change from twig function (#2351)

Co-authored-by: Harri Häivälä <[email protected]>

src/Provider/ImageProvider.php

@@ -107,7 +107,7 @@ public function getHelperProperties(MediaInterface $media, string $format, array
             }
 
             unset($options['picture']);
-            $pictureParams['img'] = $params + $options;
+            $pictureParams['img'] = array_merge($params, $options);
             $params = ['picture' => $pictureParams];
         } elseif (MediaProviderInterface::FORMAT_ADMIN !== $format) {
             $srcSetFormats = $this->getFormats();