On a ProjectReference, setting ReferenceOutputAssembly=false and Private=true does not copy the reference to the output without referencing it

As far as I can see, the problem is that if `ReferenceOutputAssembly` is set to `false`, then the project will not be added to `_ResolvedProjectReferencePaths`, which is what gets passed to RAR, so RAR never even has the reference to consider.

I would expect ReferenceOutputAssembly to prevent the compiler from seeing the reference, but not prevent copying as a dependency (say, for reflection purposes).