Add reset method to PageLayout

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageHeader.razor.cs

@@ -111,10 +111,7 @@ public partial class PageHeader : ComponentBase, IDisposable
     
     public void Dispose()
     {
-        PageLayout.ToolbarItems.Clear();
-        PageLayout.BreadcrumbItems.Clear();
-        PageLayout.Title = string.Empty;
-        PageLayout.MenuItemName = string.Empty;
+        PageLayout.Reset();
         ToolbarItemRenders.Clear();
     }
 }

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageLayout.cs

@@ -41,4 +41,12 @@ public class PageLayout : IScopedDependency, INotifyPropertyChanged
     {
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     }
+    
+    public void Reset()
+    {
+        Title = string.Empty;
+        MenuItemName = string.Empty;
+        BreadcrumbItems.Clear();
+        ToolbarItems.Clear();
+    }
 }