ShowInputAsync Does not accept DefaultButtonFocus (version 1.4.3)

[ccuciak]

Describe the bug

Created a MetroDialogSettings, and by default the DefaultButton Focus is set to the MessageDialogResult.Negative. When the dialog is displayed the Ok button is highlighted and the default focus.

Steps to reproduce

1. Create an async method
2. Create MetroDialogSettings using defalt constructor, which set the negative button as the focus.
3. Await of the DialogCoordinator.ShowInputAsync passing in the MetroDialogSettings created above.
4. The Ok button is always highlighted and selected if a button is not selected.
5. I have tried manually setting -> metroInputSettings.DefaultButtonFocus = MessageDialogResult.Negative

Expected behavior

The OK button should not be selected and defaulted.

Actual behavior

Environment

Windows 10, .NET Framework 4.7.2

MahApps.Metro version: v1.4.3
Windows build number: Win10 Version 21H2 (OS Build 19044.1645)
Visual Studio: 2017 15.9.13
Target Framework: .4.7.2

Screenshots