Backing member for a RoutedEvent should be static and readonly

Proprietary

A RoutedEvent is registered once per owner type, so its backing field or property must be static readonly. Adds the missing modifiers.

OpenRewrite.Recipes.CSharp.CodeQuality.Wpf.MakeRoutedEventBackingMemberStaticReadonly

mod run . --recipe=OpenRewrite.Recipes.CSharp.CodeQuality.Wpf.MakeRoutedEventBackingMemberStaticReadonly

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.