fix(datatables): default orderby now applied correctly (#3022)

app/docker/components/datatables/service-tasks-datatable/serviceTasksDatatableController.js

@@ -86,6 +86,7 @@ angular.module('portainer.docker')
           this.settings.open = false;
         }
         this.onSettingsRepeaterChange();
+        this.state.orderBy = this.orderBy;
       };
     }
 ]);