Filter: ep_facet_meta_values_with_count

Filter meta values, their labels, and count.

If you need to display a value with a different label:

add_filter(
    'ep_facet_meta_all_values',
    function( $values, $meta_field ) {
        if ( 'my_field' !== $meta_field ) {
            return $values;
        }
        if ( isset( $values['unreadable_value'] ) ) {
            $values['unreadable_value']['name'] = 'My Readable Value';
        }
        return $values;
    },
    10,
    2
);