message: fix: always clear selected value on writeValue
diff: @@ -247,10 +247,10 @@ export class NgSelectComponent implements OnDestroy, OnChanges, AfterViewInit, C
  }
  writeValue(value: any | any[]): void {
  + this.itemsList.clearSelected();
  if (value === undefined) {
  return;
  }
  - this.itemsList.clearSelected();
  this._validateWriteValue(value);
  this._handleWriteValue(value);
  this.detectChanges();
  