How to set data table header sorter to be outlined or other variants?

[docpelux]

I set outlined for all my selects, but when set data table in mobile version it uses a generic v-select for sorting.
I want to set this select to be outlined, tried with header-props, but does not works.
It sets outlined in the th.

I've also set outlined in vuetify defaults:

VSelect: {
    variant: 'outlined',
    density: 'compact',
    color: 'primary'
}

<v-data-table-server
    v-model:items-per-page="itemsPerPage"
    v-model:page="page"
    v-model:sort-by="sortBy"
    :header-props="{ variant: 'outlined' }"
    :headers
    :items="items"
    :items-length="totalItems"
    :mobile="null"
    mobile-breakpoint="md"
    @update:options="search"
/>

[J-Sek]

This is covered by the docs already. You need to be on v4.2.0 at least