I try, but its not work. this is my code

manifest:

{
'name': "Fiscal POS (Dominican Republic)",
'summary':
"""
This module adds NCF invoicing functionalities to the POS.
""",
'license': 'LGPL-3',
'website': "https://github.com/odoo-dominicana",
'category': 'Localization',
'version': '18.0.0.0.3',
'depends': [
'base',
'point_of_sale',
'l10n_do_accounting',
],
'data': [
],
'assets': {
'point_of_sale.assets': [
'l10n_do_pos/static/src/**/*',
'l10n_do_pos/static/src/**/*',
],
},
'installable': True,
}

payment_screen_extend.xml:

<?xml version="1.0" encoding="UTF-8"?>
<templates id="template" xml:space="preserve">
<t t-name="l10n_do_pos.PaymentScreenButtons" t-inherit="point_of_sale.PaymentScreenButtons" t-inherit-mode="extension">
<xpath expr="//div[hasclass('ppayment-buttons')]" position="inside">
<button class="btn btn-light btn-lg d-flex justify-content-between align-items-baseline w-100 w-md-50 lh-lg" t-on-click="onClickTest">
<span>
<i class="fa fa-file-text-o me-2"></i>Test Button
</span>
</button>
</xpath>
</t>
</templates>

payment_screen_extend.js:

/** @odoo-module **/
import { patch } from "@web/core/utils/patch";
import { PaymentScreen } from "@point_of_sale/app/screens/payment_screen/payment_screen";

patch(PaymentScreen.prototype, {
async onClickTest() {
console.log("Clicked Test Button");
},
});

I can't see the problem.