get overrideLocale value from settings file in guest wait

bigbluebutton-html5/private/static/guest-wait/guest-wait.html

@@ -114,7 +114,7 @@
       const DEFAULT_LANGUAGE = 'en';
       const LOCALES_ENDPOINT = '/html5client/locale';
       const url = new URL(`${window.location.origin}${LOCALES_ENDPOINT}`);
-      url.search = `locale=${navigator.language}`;
+      url.search = `locale=${navigator.language}&init=true`;
 
       const localesPath = 'locales';