Release v15.35.1

Fixed

• ReadModelScenario<T> now correctly round-trips read-model properties typed as a collection of bare concepts (e.g. IReadOnlyList<MyConcept> where MyConcept : ConceptAs<T>). Previously such a property threw a JsonException ("Cannot get the value of a token type 'StartObject' as a string") when the projected instance was materialized, because the projection harness serialized the state without the concept-aware serializer options while deserializing with them. Scalar concept properties round-trip the same way.