Generic RelayCommand with Nullable Types

[symbiogenesis]

When nullable types are enabled, the following code results in CS8622, because the compiler thinks the OnOpenPhoto() method should have a nullable RecordPhoto parameter, even though I did not pass in the RecordPhoto type to the AsyncRelayCommand as nullable.

public PhotosViewModel()
{
    this.OpenPhotoCommand = new AsyncRelayCommand<RecordPhoto>(this.OnOpenPhoto);
}

public ICommand OpenPhotoCommand { get; }

private async Task OnOpenPhoto(RecordPhoto recordPhoto)
{
    await DoSomeStuffAsync(recordPhoto);
}

This seems like a deficiency, because ideally the nullability should be preserved.

And indeed, when inspecting the CommunityToolkit source code, one can see that it is marking the Func as accepting a nullable generic

/// <summary>
/// Initializes a new instance of the <see cref="AsyncRelayCommand{T}"/> class.
/// </summary>
/// <param name="execute">The execution logic.</param>
/// <remarks>See notes in <see cref="RelayCommand{T}(Action{T})"/>.</remarks>
/// <exception cref="System.ArgumentNullException">Thrown if <paramref name="execute"/> is <see langword="null"/>.</exception>
public AsyncRelayCommand(Func<T?, Task> execute)
{
    ArgumentNullException.ThrowIfNull(execute);

    this.execute = execute;
}