fix(stan): remove redundant array_values in IntArrayDecoder

PHPStan: $out is already a list built via sequential append.

Author: Ibochkarev

core/components/minishop3/src/Utils/IntArrayDecoder.php

@@ -44,6 +44,6 @@ public static function decode($input): array
             }
         }
 
-        return array_values($out);
+        return $out;
     }
 }