🐛 Fix Backtop cannot work in Chrome iframe (#24194)

close #24192

components/_util/scrollTo.ts

@@ -24,8 +24,8 @@ export default function scrollTo(y: number, options: ScrollToOptions = {}) {
     const nextScrollTop = easeInOutCubic(time > duration ? duration : time, scrollTop, y, duration);
     if (isWindow(container)) {
       (container as Window).scrollTo(window.pageXOffset, nextScrollTop);
-    } else if (container instanceof Document) {
-      container.documentElement.scrollTop = nextScrollTop;
+    } else if (container instanceof HTMLDocument || container.constructor.name === 'HTMLDocument') {
+      (container as HTMLDocument).documentElement.scrollTop = nextScrollTop;
     } else {
       (container as HTMLElement).scrollTop = nextScrollTop;
     }