Unable to switch from fullscreen to normal mode in SDL

# Summary
When trying to set `window.WindowState = WindowState.Normal` in fullscreen mode nothing happens with SDL as backend for windowing.

# Steps to reproduce
- Platform: Desktop
- Framework Version: .NET Core 10.0
- Silk.NET Version: 2.23.0
- API: OpenGL
- API Version: Any GL version

1. Use this minimal reproducible example:
```
using System;
using System.Drawing;
using Silk.NET.Input;
using Silk.NET.OpenGL;
using Silk.NET.Windowing;

// ReSharper disable AccessToDisposedClosure

namespace SlikTest;

internal static class Program
{
private static void Main(string[] args)
{
using var window = Window.Create(WindowOptions.Default);

IInputContext input;
GL gl = null!;

window.Load += () =>
{
gl = window.CreateOpenGL();
input = window.CreateInput();
input.Keyboards[0].KeyDown += (keyboard, _, _) =>
{
if (keyboard.IsKeyPressed(Key.Enter))
{
switch (window.WindowState)
{
case WindowState.Normal:
window.WindowState = WindowState.Fullscreen;
break;
case WindowState.Fullscreen:
window.WindowState = WindowState.Normal;
break;
default:
throw new ArgumentOutOfRangeException();
}
}

if (keyboard.IsKeyPressed(Key.Escape))
window.Close();
};
};

window.Render += _ =>
{
var color = window.WindowState switch
{
WindowState.Normal => Color.Red,
WindowState.Fullscreen => Color.Green,
_ => Color.White,
};
gl.ClearColor(color);
gl.Clear(ClearBufferMask.ColorBufferBit);
};

window.Run();
}
}
```
2. Press Enter to switch to full screen mode
3. Press Enter and the window will not return to normal
4. See bug