feat: resolve highlight binding issue.

src/Ursa/Controls/NavMenu/OverflowStackPanel.cs

@@ -0,0 +1,30 @@
+using Avalonia.Controls;
+
+namespace Ursa.Controls;
+
+public class OverflowStackPanel: StackPanel
+{
+    public Panel? OverflowPanel { get; set; }
+    public void MoveChildrenToOverflowPanel()
+    {
+        var children = this.Children.ToList();
+        foreach (var child in children)
+        {
+            this.Children.Remove(child);
+            this.OverflowPanel?.Children.Add(child);
+        }
+    }
+    
+    public void MoveChildrenToMainPanel()
+    {
+        var children = this.OverflowPanel?.Children.ToList();
+        if (children != null && children.Count > 0)
+        {
+            foreach (var child in children)
+            {
+                this.OverflowPanel?.Children.Remove(child);
+                this.Children.Add(child);
+            }
+        }
+    }
+}