Can't click on the scroll bar if click outside modal close feature is enabled.

[LasithaPrabodha]

I fixed it like this in dialog-wrapper.component. Fixed onclick event not working.

closeByClickOutside() {
    const containerEl = this.container.nativeElement;
    containerEl.querySelector('.modal-content').addEventListener('mouseup', (event)=> {
      event.stopPropagation();
    });
    containerEl.children[0].addEventListener('mouseup', () => {
        this.dialogService.removeDialog(this.content);
    }, false);
  }