[AOT] Input converter creation code gets trimmed

We create the converter instance when it is [requested for the first time ](https://github.com/Azure/azure-functions-dotnet-worker/blob/main/src/DotNetWorker.Core/Converters/Converter/DefaultInputConverterProvider.cs#L51)(at runtime). This code gets trimmed with AOT publishing.

https://github.com/Azure/azure-functions-dotnet-worker/blob/1da3c27d3b24e648a20356fb3180abfcdc7f6cff/src/DotNetWorker.Core/Converters/Converter/DefaultInputConverterProvider.cs#L49-L54

Start in src/DotNetWorker.Core/Converters/Converter/DefaultInputConverterProvider.cs at lines 49-54 and inspect how the converter instance is created on first request. Reproduce or verify the behavior with an AOT-published worker; done when the required converter creation code is retained and works at runtime.

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