fix #862 Scroll loading does not work if the table is not displayed completely horizontally

Author: vegegoku

domino-ui/src/main/java/org/dominokit/domino/ui/datatable/plugins/BodyScrollPlugin.java

@@ -41,9 +41,10 @@ public void onBodyAdded(DataTable<T> dataTable) {
           }
           int offsetHeight = new Double(scrollElement.offsetHeight).intValue();
           int scrollHeight = new Double(scrollElement.scrollHeight).intValue();
+          int clientHeight = new Double(scrollElement.clientHeight).intValue();
 
           if (JsMath.abs(offsetHeight) + JsMath.abs(scrollTop)
-              == new Double(scrollHeight).intValue()) {
+              == new Double(scrollHeight + (offsetHeight - clientHeight)).intValue()) {
             dataTable.fireTableEvent(new BodyScrollEvent(ScrollPosition.BOTTOM));
           }
         });