ObservablePropertyAttribute still requires preview language version, even after .Net 10 and C# 14 release

It is still required language version preview, if you want to use `ObservablePropertyAttribute` on a partial property (where it belongs) instead of on backing field.
It shouldn't be required anymore in C# 14 and above (which was released two months ago).
Issue occurs in NuGet CommunityToolkit.Mvvm 8.4.0.
Is the new, fixed version of NuGet package expected?