BI-150695 fix: 兼容当前元素无parentNode的情况

packages/fineui/src/core/controller/controller.layer.js

@@ -108,7 +108,7 @@ export class LayerController extends Controller {
                     height: offset.height || (w.outerHeight() - (offset.top || 0) - (offset.bottom || 0)) || "",
                 };
 
-                const { top, left, scaleY, scaleX } = getPositionRelativeContainingBlockRect(layout.element[0].parentNode);
+                const { top, left, scaleY, scaleX } = getPositionRelativeContainingBlockRect(layout.element[0].parentNode || layout.element[0]);
 
                 css.top = (css.top - top) / scaleY;
                 css.left = (css.left - left) / scaleX;