This middleware checks if the user is not authenticated.
If not, it will redirect a user to the page specified in the redirect.onGuestOnly option (default is /).
If there is no redirect rule the middleware will throw 403 error.
This is an example of middleware usage
<script lang="ts" setup>
definePageMeta({
middleware: ['sanctum:guest'],
});
</script>
<template>
<!-- Page for guests only -->
</template>
<style scoped></style>