NullableConverter does not flow serialization state

[eiriktsarpalis]

The System.Text.Json NullableConverter<T> incorrectly declares itself as a value converter, even though this only applies to cases where the T type uses a value converter itself. This means that nullable struct serialization does not flow serialization state correctly, which can result in async serialization not performing as expected.

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Issue Details

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The System.Text.Json NullableConverter<T> incorrectly declares itself as a value converter, even though this only applies to cases where the T type uses a value converter itself. This means that nullable struct serialization does not flow serialization state correctly, which can result in async serialization not performing as expected.

Author:	eiriktsarpalis
Assignees:	-
Labels:	area-System.Text.Json, untriaged
Milestone:	-