Reactiveui: Make Fody ToPropertyEx work against IReactiveObject

[MartinZikmund]

Is your feature request related to a problem? Please describe.

I would like to use ToPropertyEx against an instance of IReactiveObject, but it unfortunately requires a ReactiveObject

Describe the solution you'd like

Change the generic constraint on ToPropertyEx to class, IReactiveObject to match ToProperty method.

Describe alternatives you've considered

Implementing the method manually, but that is less convenient that having this out of the box.

Describe suggestions on how to achieve the feature

Change the generic constraint on ToPropertyEx to class, IReactiveObject to match ToProperty method. Unfortunately this causes failure of API approval test. The change makes the constraint more permissive, but it is still a breaking change.

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[MartinZikmund]

If we agree on a way to resolve this, I would love to contribute the change

[cabauman]

@glennawatson shall we consider this request at the same time as changing the ToPropertyEx name?

[glennawatson]

Yeah. I have this happening in my testing version.

[jcummings2]

Any update on this capability?

[glennawatson]

Next major release is the plan for this one. There is a major rewrite for the Fody coming up that will support these features.