Describe the bug
I tried to create my own Modal component using OfficeLayer. It seems that Vuex $store is not "pushed" to the components inside OfficeLayer slot.

To Reproduce

1. Use the OfficeLayer component like this for example:

<template>  <OfficeLayer>      <div>        <div>          <template v-if="title">{{title}}</template>          <button @click="$emit('closeModal')">Fermer</button>        </div>        <SaveAttachments/>      </div>  </OfficeLayer></template>

2. Inside the child component of OfficeLayer ("SaveAttachments" in above case), try to access $store.
3. $store is undefined

Expected behavior
$store in child component should be accessible.