WPF set 0,0 dashes to Pen DashStyle will cause high CPU usage

* .NET Core Version: All
* Windows version: All (Win10, Win7)
* Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes

**Problem description:**

WPF will cause high CPU usage when we set `new DashStyle(new double[] { 0, 0 }, 0)` to the Pen DashStyle.

```csharp
protected override void OnRender(DrawingContext drawingContext)
{
var pen = new Pen()
{
Brush = Brushes.Black,
DashStyle = new DashStyle(new double[] { 0, 0 }, 0),
Thickness = 10,
};

var geometry = new LineGeometry(new Point(0, 0), new Point(500, 0));

drawingContext.DrawGeometry(Brushes.Beige, pen, geometry);

base.OnRender(drawingContext);
}
```

It seems costs too many resources to render in render thread.

**Actual behavior:**

High CPU usage

**Expected behavior:**

**Minimal repro:**

See https://github.com/lindexi/lindexi_gd/tree/5137479a45ce3f52ff1cf5c5d6ed0c20dfbeaeb3/KolefijurfeLonaynallcay

Step:

1. Open the Task Manager.
2. Clone and run the code.
3. Moving your mouse on the application MainWindow.

Then you can find the KolefijurfeLonaynallcay.exe takes up a lot of CPU resources.