Make it work with setup sugar

[biroplane]

To make it work wit vue 3.4 and setup sugar syntax, i've updated the script as follow:

<script setup lang="ts">
import { computed, provide, ref, useSlots } from "vue";

const slots = useSlots();

const tabTitles = computed(
  () =>
    slots.default &&
    (slots!.default()[0].children as any)!.map((t: any) => t.props.title)
);

const selectedTiltle = ref(tabTitles.value[0]);

provide("selectedTitle", selectedTiltle);
</script>

i didn't test it with named slots or other use cases, but it works in my project
hope this heps.