newsupernova/vendor/magento/module-catalog-url-rewrite/etc/eav_attributes.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:module:Magento_Eav:etc/eav_attributes.xsd">
    <entity type="catalog_product">
        <attribute code="url_key">
            <field code="is_unique" locked="true" />
            <field code="is_searchable" locked="true" />
        </attribute>
    </entity>
</config>