Fix Manipulator.offset() (#33603)

* test: add more test cases for Manipulator.offset()

* fix: Manipulator.offset() is using obsolete properties to get scroll position

Co-authored-by: XhmikosR <xhmikosr@gmail.com>
Co-authored-by: GeoSot <geo.sotis@gmail.com>

js/src/dom/manipulator.js

@@ -64,8 +64,8 @@ const Manipulator = {
     const rect = element.getBoundingClientRect()
 
     return {
-      top: rect.top + document.body.scrollTop,
-      left: rect.left + document.body.scrollLeft
+      top: rect.top + window.pageYOffset,
+      left: rect.left + window.pageXOffset
     }
   },