v-close-popper doesn't seem to be working on v4

Hi, I'm testing the `v-tooltip@vue3` `v4.0.0-alpha.1` following the migration guide [here](https://github.com/Akryum/v-tooltip/discussions/603)

```

Awiwi

I'm a popover
X


```

I don't know if I'm applying the `v-close-popper` directive correctly, but doesn't seems to work.

Reproduction link:

https://codesandbox.io/s/peaceful-morning-f0724?file=/src/App.vue:164-495