#4255 - replaced the urldecode method with rawurldecode method which …

…is identical other than it doesn't parse the + characters

src/Plugin/PersistedQuery.php

@@ -294,7 +294,7 @@ protected function processVariables($args): array
         $variables = [];
 
         foreach ($args as $key => $value) {
-            $variables[$key] = json_decode(urldecode($value), true);
+            $variables[$key] = json_decode(rawurldecode($value), true);
         }
 
         return $variables;