Table: Fix sort-change behaviour when sort condition is null (#15010) (#15012)

packages/table/src/table-header.js

@@ -502,8 +502,6 @@ export default {
 
       if (!order) {
         sortOrder = column.order = null;
-        states.sortingColumn = null;
-        sortProp = null;
       } else {
         sortOrder = column.order = order;
       }