Fix token's scanning results.

Related to #3478798

src/Token.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\token_or;
 
+use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\token\Token as OriginalToken;
 
@@ -61,7 +62,7 @@ class Token extends OriginalToken {
       }
     }
 
-    return array_merge_recursive($results, parent::scan(implode(' ', $sub_tokens)));
+    return NestedArray::mergeDeep($results, parent::scan(implode(' ', $sub_tokens)));
   }
 
 }