Use getLanguages to collect the language ids for path detection

modules/graphql_compose_routes/src/Plugin/GraphQL/DataProducer/RouteLanguage.php

@@ -88,7 +88,7 @@ class RouteLanguage extends DataProducerPluginBase implements ContainerFactoryPl
 
     // Get list of available lang codes for a pre match on the path.
     if (!$langcode) {
-      $prefixes = array_keys($this->languageManager->getStandardLanguageList());
+      $prefixes = array_keys($this->languageManager->getLanguages());
 
       // If the path starts with a langcode, use that.
       if (preg_match('#^/(' . implode('|', $prefixes) . ')($|/)#i', $path, $matches)) {