Table: enhanced table sorting when clicking on the arrow (#12890)

packages/table/src/table-header.js

@@ -468,7 +468,9 @@ export default {
 
     handleSortClick(event, column, givenOrder) {
       event.stopPropagation();
-      let order = givenOrder || this.toggleOrder(column);
+      let order = column.order === givenOrder
+        ? null
+        : (givenOrder || this.toggleOrder(column));
 
       let target = event.target;
       while (target && target.tagName !== 'TH') {