newsupernova/vendor/magento/module-bundle/etc/frontend/events.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:Event/etc/events.xsd">
    <event name="catalog_product_upsell">
        <observer name="bundle_observer" instance="Magento\Bundle\Observer\AppendUpsellProductsObserver"/>
    </event>
    <event name="product_option_renderer_init">
        <observer name="bundle_observer" instance="Magento\Bundle\Observer\InitOptionRendererObserver"/>
    </event>
</config>