Button 'PressedForeground' binding error in ContentDialog (4.2.1)

Describe the bug

Version 4.2.1,When open a ContentDialog,cause binding error:

System.Windows.Data Error: 40 : BindingExpression path error: 'PressedForeground' property not found on 'object' ''ContentPresenter' (Name='')'. BindingExpression:Path=PressedForeground; DataItem='ContentPresenter' (Name=''); target element is 'Button' (Name=''); target property is 'Foreground' (type 'Brush')

System.Windows.Data Error: 40 : BindingExpression path error: 'PressedForeground' property not found on 'object' ''UserAddModifyDialog' (Name='')'. BindingExpression:Path=PressedForeground; DataItem='UserAddModifyDialog' (Name=''); target element is 'Button' (Name='CloseButton'); target property is 'Foreground' (type 'Brush')

System.Windows.Data Error: 40 : BindingExpression path error: 'PressedForeground' property not found on 'object' ''ContentDialog' (Name='')'. BindingExpression:Path=PressedForeground; DataItem='ContentDialog' (Name=''); target element is 'Button' (Name='PrimaryButton'); target property is 'Foreground' (type 'Brush')

But version 4.2.0 is OK

To Reproduce

Just create a ContentDialog and press a button in the footer

Expected behavior

No binding errors

Screenshots

No response

OS version

Windows 11 25H2 (26200.8246)

.NET version

.NET 10

WPF-UI NuGet version

4.2.1

Additional context

No response

Start by creating a ContentDialog in WPF-UI 4.2.1 and pressing a footer button, then compare the binding behavior with version 4.2.0. Trace the ContentDialog, ContentPresenter, and button bindings for PressedForeground; the work is done when the reproduction produces no binding errors.