Flash background of a listview item when an network event occurred

I have a list of items that is represented by separate view models. Each view model is listening to network event. I want to flash the background of a listview item when a specific error happen. I have tried using visual state groups with state triggers but it doesn't seem to work for me.

Here is what I have tried - MainWindow.xaml:

<?xml version="1.0" encoding="utf-8"?><Window    x:Class="FlashingTest.MainWindow"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:local="using:FlashingTest"    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"    mc:Ignorable="d"    Title="FlashingTest"><ListView ItemsSource="{x:Bind ViewModel.Items}"><ListView.ItemTemplate><DataTemplate x:DataType="local:TestItemViewModel"><Border                    Margin="0,2,0,0"                    MinHeight="30"                    MinWidth="300"><VisualStateManager.VisualStateGroups><VisualStateGroup x:Name="Flashing"><VisualState><VisualState.StateTriggers><StateTrigger IsActive="{Binding Flashing}" /></VisualState.StateTriggers><Storyboard><ColorAnimation Duration="0:0:0.3"                                        Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)"                                        To="GreenYellow"                                        AutoReverse="True"                                    /></Storyboard></VisualState></VisualStateGroup></VisualStateManager.VisualStateGroups><TextBlock Text="{x:Bind Text}" /></Border></DataTemplate></ListView.ItemTemplate></ListView></Window>

MainWindow.xaml.cs:

public sealed partial class MainWindow : Window{    public MainViewModel ViewModel    {        get;    } = new();    public MainWindow()    {        this.InitializeComponent();        this.ViewModel.Items.Add(new()        {            Text = "First"        });        this.ViewModel.Items.Add(new()        {            Text = "Second"        });        this.ViewModel.Items.Add(new()        {            Text = "Third"        });    }}

MainViewModel.cs:

public class MainViewModel{    public ObservableCollection<TestItemViewModel> Items    {        get;    } = new();}

TestItemViewModel.cs (network event simulated with a timer)

public class TestItemViewModel : INotifyPropertyChanged{    private readonly DispatcherTimer _timer;    private bool _flashing = false;    public event PropertyChangedEventHandler PropertyChanged;    public bool Flashing    {        get => _flashing;        set => SetProperty(ref _flashing, value);    }    public TestItemViewModel()    {        _timer = new DispatcherTimer();        _timer.Interval = TimeSpan.FromMilliseconds(250);        _timer.Tick += (s, e) =>        {            if (Random.Shared.Next() % 3 == 0)                Flashing = true;        };        _timer.Start();    }    public string Text    {        get; set;    }    protected void SetProperty<T>(ref T field, T value, [CallerMemberName] string propertyName = null)    {        field = value;        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));    }}