newsupernova/vendor/magento/module-inventory-configurable-product/etc/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\Catalog\Model\ResourceModel\Product\CompositeBaseSelectProcessor">
        <arguments>
            <argument name="baseSelectProcessors" xsi:type="array">
                <item name="stock_status" xsi:type="object">Magento\InventoryConfigurableProduct\Model\ResourceModel\Product\StockStatusBaseSelectProcessor</item>
            </argument>
        </arguments>
    </type>
</config>