fix: Re-write Nuxt auth backend and get rid of sidebase auth (#6322)

frontend/pages/shopping-lists/index.vue

@@ -131,7 +131,6 @@ import { useShoppingListPreferences } from "~/composables/use-users/preferences"
 import type { UserOut } from "~/lib/api/types/user";
 
 export default defineNuxtComponent({
-  middleware: "sidebase-auth",
   setup() {
     const $auth = useMealieAuth();
     const i18n = useI18n();