fix: fix default redirect language bug

Previously, the default language is also the automatic language
detection option. So if a user attempts to manually change their
language to the default language away from their browser's language, it
will immediately detect the language as their browser language and
redirect them.

Additionally, language cookies weren't updated, so changing the language
from the default language to another language wouldn't be remembered.

Fix this by calling setLocale as required; see
https://i18n.nuxtjs.org/docs/guide/lang-switcher

components/LanguageSelect.vue

@@ -25,10 +25,12 @@ import { watch } from "vue";
 import { navigateTo } from "#app";
 import { useI18n, useSwitchLocalePath } from "#imports";
 
-const { locale, locales } = useI18n();
+const { locale, locales, setLocale } = useI18n();
 const switchLocalePath = useSwitchLocalePath();
 
 watch(locale, (locale) => {
+ // Update saved language setting, or the default language will redirect back.
+ setLocale(locale);
  // Trigger a page reload because translations doesn't load properly otherwise.
  navigateTo(switchLocalePath(locale), { external: true });
 });