pos/pos_picking_delayed/demo/pos_config.xml

<?xml version="1.0"?>
<!--
    Copyright 2020 - Today Sylvain LE GAL (https://twitter.com/legalsylvain)
    License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-->

<odoo>

    <!--
    we disable the feature for the demo pos config to avoid
    other module to fail during the test.
    -->
    <record id="point_of_sale.pos_config_main" model="pos.config">
        <field name="picking_creation_delayed">False</field>
    </record>

</odoo>