whatsapp_web_groups/theme_m22tc/views/website_menu_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="website_menu_view_form_m22" model="ir.ui.view">
        <field name="name">website.menu.form.m22</field>
        <field name="model">website.menu</field>
        <field name="inherit_id" ref="website.website_menus_form_view"/>
        <field name="arch" type="xml">
            <field name="url" position="after">
                <field name="m22_icon_class"/>
            </field>
        </field>
    </record>

    <!-- También agregarlo a la vista lista para edición rápida -->
    <record id="website_menu_view_tree_m22" model="ir.ui.view">
        <field name="name">website.menu.tree.m22</field>
        <field name="model">website.menu</field>
        <field name="inherit_id" ref="website.menu_tree"/>
        <field name="arch" type="xml">
            <field name="url" position="after">
                <field name="m22_icon_class"/>
            </field>
        </field>
    </record>
</odoo>