.Net: Bug: Input name: 'token_type_ids' is not in the metadata

[klaus-bleck]

Describe the bug
Exception is thrown if you try to to use the BertOnnxTextEmbeddingGenerationService with a mpnet embedding model.

Microsoft.ML.OnnxRuntime.OnnxRuntimeException HResult=0x80131500 Message=[ErrorCode:InvalidArgument] Input name: 'token_type_ids' is not in the metadata Source=Microsoft.ML.OnnxRuntime StackTrace: at Microsoft.ML.OnnxRuntime.InferenceSession.LookupInputMetadata(String nodeName) at Microsoft.ML.OnnxRuntime.InferenceSession.LookupUtf8Names[T](IReadOnlyCollection``1 values, NameExtractor``1 nameExtractor, MetadataLookup metaLookup) at Microsoft.ML.OnnxRuntime.InferenceSession.Run(RunOptions runOptions, IReadOnlyCollection``1 inputNames, IReadOnlyCollection``1 inputValues, IReadOnlyCollection``1 outputNames) at Microsoft.SemanticKernel.Connectors.Onnx.BertOnnxTextEmbeddingGenerationService.<GenerateEmbeddingsAsync>d__18.MoveNext() at Microsoft.SemanticKernel.Embeddings.EmbeddingGenerationExtensions.<GenerateEmbeddingAsync>d__2``2.MoveNext() at Program.<>c.<<<Main>$>b__0_1>d.MoveNext()

It seems the BertOnnxTextEmbeddingGenerationService tries to fill the input token_type_ids even if the model does not declare it, e.g. the mpnet models.

To Reproduce
Steps to reproduce the behavior:

1. Download ONNX-Model like sentence-transformers/all-mpnet-base-v2
2. Create a test project with a service collection and register the embedding service and the kernel (builder.Services.AddBertOnnxTextEmbeddingGeneration) for the previously downloaded model with its vocabulary
3. Use the service (await textEmbeddingGenerationService.GenerateEmbeddingAsync("this is an example")
4. Exception is thrown

Expected behavior
Embedding is just working or configuration is possible. Something without the need to export the model with the additional input

Screenshots

Platform

• Language: C#
• Source: Microsoft.SemanticKernel.Connectors.Onnx 1.45.0-alpha
• AI model: sentence-transformers/all-mpnet-base-v2
• IDE: VS Community 2022
• OS: Windows