ImageClassificationTrainer PredictedLabelColumnName bug when the name is not default #7452

System Information (please complete the following information):

• OS & Version: Windows 11
• ML.NET Version: ML.NET v4.0.2
• .NET Version: .NET 9.0
• Microsoft.ML.Vision 4.0.2
• SciSharp.TensorFlow.Redist 2.3.1 (or Windows GPU 2.3.1)

Describe the bug
If ImageClassificationTrainer.Options PredictedLabelColumnName = "PredictedLabel" (default), no bugs.
But if ImageClassificationTrainer.Options PredictedLabelColumnName = "PredictedLabelKey" (not default), i get exception "Could not find input column 'PredictedLabelKey' (Parameter 'inputSchema')" from KeyToValueMappingTransformer (inputColumnName: "PredictedLabelKey") when Fit().

Expected behavior
No exception

Screenshots, Code, Sample Projects
Project with reproduction and xunit: https://github.com/Lavshyak/MLNetImageClassificationTrainerPredictedColumnNameProblem/blob/master/MLNetImageClassificationTrainerPredictedColumnNameProblem/UnitTest1.cs