Small fix (#16872)

* small fix, prevent annoying error log when registering keydown esc from user custom js

* Update script.js

Co-authored-by: missionfloyd <missionfloyd@users.noreply.github.com>

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Co-authored-by: missionfloyd <missionfloyd@users.noreply.github.com>

script.js

@@ -182,7 +182,7 @@ document.addEventListener('keydown', function(e) {
         const lightboxModal = document.querySelector('#lightboxModal');
         if (!globalPopup || globalPopup.style.display === 'none') {
             if (document.activeElement === lightboxModal) return;
-            if (interruptButton.style.display === 'block') {
+            if (interruptButton?.style.display === 'block') {
                 interruptButton.click();
                 e.preventDefault();
             }