Handle locales mapping when loading caches routes (#763)

Co-authored-by: Jérémy ARGOUD <jargoud@webqam.fr>

Author: jargoud

src/Mcamara/LaravelLocalization/Traits/LoadsTranslatedCachedRoutes.php

@@ -24,7 +24,9 @@ protected function loadCachedRoutes()
 
         // compute $locale from url.
         // It is null if url does not contain locale.
-        $locale = $localization->setLocale();
+        $locale = $localization->getInversedLocaleFromMapping(
+            $localization->setLocale()
+        );
 
         $localeKeys = $localization->getSupportedLanguagesKeys();