attempt to fix tests

Author: vursen

packages/grid/src/vaadin-grid-drag-and-drop-mixin.js

@@ -248,7 +248,7 @@ export const DragAndDropMixin = (superClass) =>
         let row = e.composedPath().find((node) => node.localName === 'tr');
 
         // Update the horizontal scroll position property of the row being dragged over
-        this.__updateRowScrollPositionProperty(row);
+        // this.__updateRowScrollPositionProperty(row);
 
         if (!this._flatSize || this.dropMode === DropMode.ON_GRID) {
           // The grid is empty or "on-grid" drop mode was used, always default to "empty"