fix(stark-ui): multi-sorting on stark-table not working after sorting…

… on single field

The issue was caused by the fact the ngClass multisorting was not changed.

ISSUES CLOSED: #3580

packages/stark-ui/src/modules/table/components/table.component.ts

@@ -864,22 +864,23 @@ export class StarkTableComponent extends AbstractStarkUiComponent implements OnI
 	 */
 	public onReorderChange(column: StarkColumnSortChangedOutput): void {
 		if (column.sortable) {
-			this.resetSorting(column);
 			const sortedColumn = find(this.columns, { name: column.name });
 			if (sortedColumn) {
 				sortedColumn.sortPriority = 1;
 				switch (column.sortDirection) {
 					case "asc":
-						sortedColumn.sortDirection = "desc";
+						this.orderProperties = ["-" + sortedColumn.name];
 						break;
 					case "desc":
-						sortedColumn.sortDirection = "";
+						this.orderProperties = [];
 						break;
 					default:
-						sortedColumn.sortDirection = "asc";
+						this.orderProperties = [sortedColumn.name];
 						break;
 				}
 			}
+			this.isMultiSorting = false;
+			this.cdRef.detectChanges();
 			this.sortData();
 		}
 	}
@@ -919,6 +920,7 @@ export class StarkTableComponent extends AbstractStarkUiComponent implements OnI
 				}
 
 				this.orderProperties = newOrderProperties; // enforcing immutability :)
+				this.isMultiSorting = this.orderProperties.length > 1;
 				this.cdRef.detectChanges(); // needed due to ChangeDetectionStrategy.OnPush in order to refresh the columns
 
 				this.sortData();