gtm soda not show camp after click checkout

<script>
    (function () {
        function addKeyToStorage() {
            var continueButton = document.querySelector('[bi-type="upsell go to cart(checkout) pdp"]');
            if (continueButton) {
                continueButton.addEventListener('click', function () {
                    sessionStorage.setItem("showAdoricGasCilinder", false);
                });
            }
        }
        if (document.readyState === 'loading') {
            document.addEventListener('DOMContentLoaded', addKeyToStorage);
        } else {
            addKeyToStorage();
        }
    })();
</script>