Memory leak on infinite animation

[kikipoulet]

Describe the bug

For reference, found when working with SukiUI library : kikipoulet/SukiUI#245

Basically, it seems that memory from infinite animation aren't correctly cleaned.

Generating 100 "animated" buttons every second :

Generating the same buttons, without the infinite animation :

To Reproduce

axaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="AvaloniaApplication5.MainWindow"
        Title="AvaloniaApplication5">
    <Window.Styles>
        <Style Selector="Button">
            <Style.Animations>
                <Animation FillMode="None"
                           IterationCount="Infinite"
                           PlaybackDirection="Normal"
                           Duration="0:0:1.5">
                    <Animation.Easing>
                        <QuadraticEaseInOut />
                    </Animation.Easing>
                    <KeyFrame Cue="0%">
                        <Setter Property="RotateTransform.Angle" Value="0" />
                    </KeyFrame>
                    <KeyFrame Cue="30%">
                        <Setter Property="RotateTransform.Angle" Value="0" />
                    </KeyFrame>

                    <KeyFrame Cue="100%">
                        <Setter Property="RotateTransform.Angle" Value="360" />
                    </KeyFrame>
                </Animation> 

            </Style.Animations>
        </Style>
    </Window.Styles>
    <StackPanel>
        <Button Content="test" Click="Button_OnClick"></Button>
        <StackPanel Name="SP"></StackPanel>
    </StackPanel>
</Window>

C#

using System.Threading;
using System.Threading.Tasks;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Threading;

namespace AvaloniaApplication5;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }
    
      private void Button_OnClick(object? sender, RoutedEventArgs e)
        {
            var stackpanel = this.Get<StackPanel>("SP");
    
            Task.Run(() =>
            {
                while (true)
                {
                    Dispatcher.UIThread.Invoke(() =>
                    {
                        stackpanel.Children.Clear();


                        for (int i = 0; i < 100; i++)
                        {
                            stackpanel.Children.Add(new Button() { Content = "test" });
                        }
                    });

                    Thread.Sleep(1000);
                }
            });
        }
}

Expected behavior

No response

Avalonia version

11.2.0-rc1

OS

Windows

Additional context

No response