Private nullable fields added at runtime cause errors (only for reference type)

Having an issue Added private nullable field and got error during compilation CS8639: The typeof operator cannot be used on a nullable reference type' Related generated line: private static Dictionary> __Patched_NewFieldsToGetTypeFnDictionaryFieldName = new() {["kitchenObject"] = () => typeof(KitchenObject? ), }; (edited)

Start from the generated __Patched_NewFieldsToGetTypeFnDictionaryFieldName line shown in the report and trace handling for runtime-added private nullable fields. Reproduce the CS8639 compilation error with a reference-type field such as KitchenObject?; done means the generated code compiles without using typeof on a nullable reference type.

Written by the indexing model from the issue text.