FontAttributesConverter fails and makes XAML Hotreload stop working

[taublast]

SkiaLabel has a prop:

It works fine at runtime, but when the app is in debug mode we get an "Invalid value for property value" tooltip when hovering xaml ex FontAttributes="Bold" and hotreload is not working on this page until we remove this property assignment from xaml.

Again this is working fine when xaml is just initialized, the appropriate FontAttributes are passed from it to the label.