CCB prediction is not exposed in C#

[ataymano]

Describe the bug

There is no natural way of calling predict on single example and get prediction result in C# since decision_scores is not exposed here:
https://github.com/VowpalWabbit/vowpal_wabbit/blob/5a600e9ca642935f52f9df10a1d7c3eecd7b2048/cs/cli/vw_prediction.h

How to reproduce

using (var vw = new VW.VowpalWabbit($"--ccb_explore_adf "))
{
    var test = new List<string>();
    test.Add("ccb shared | s_1");
    test.Add("ccb action | a_1");
    test.Add("ccb action | a_2");
    test.Add("ccb action | a_3");
    test.Add("ccb slot |");
    test.Add("ccb slot |");

    using (var coll = new VW.VowpalWabbitMultiLineExampleCollection(vw, null, test.Select(x => vw.ParseLine(x)).ToArray()))
    {
        var prediction = coll.Predict(VW.VowpalWabbitPredictionType.ActionProbabilities);
    }
}

System.ArgumentException: 'Prediction type must be prediction_type_t::action_probs but is prediction_type_t::decision_probs'

Version

9.5

OS

All

Language

C#

Additional context

No response