magento-test/app/code/Magento/Contact/etc/frontend/di.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Framework\Url\SecurityInfo">
        <arguments>
            <argument name="secureUrlList" xsi:type="array">
                <item name="contact" xsi:type="string">/contact/</item>
            </argument>
        </arguments>
    </type>
    <type name="Magento\Contact\Plugin\UserDataProvider\ViewModel">
        <arguments>
            <argument name="viewModel" xsi:type="object">Magento\Contact\ViewModel\UserDataProvider</argument>
        </arguments>
    </type>
    <type name="Magento\Contact\Block\ContactForm">
        <plugin name="set_view_model" type="Magento\Contact\Plugin\UserDataProvider\ViewModel" />
    </type>
</config>