Entity with initialized lazy property loses the property value after deserialization

[hazzik]

Probably a regression after b26e622 (NH-3058)

Extended test from NH-3058

[Test]
public void MethodShouldLoadLazyProperty()
{
	var serializationStream = new MemoryStream();
	using (var s = OpenSession())
	{
		using (var tx = s.BeginTransaction())
		{
			var book = s.Load<DomainClass>(1);

			Assert.False(NHibernateUtil.IsPropertyInitialized(book, "ALotOfText"));

			string value = book.LoadLazyProperty();

			Assert.That(value, Is.EqualTo("Some text"));
			Assert.That(NHibernateUtil.IsPropertyInitialized(book, "ALotOfText"), Is.True);


			tx.Commit();
		}

		new BinaryFormatter().Serialize(serializationStream, s);
		serializationStream.Flush();
	}
	serializationStream.Position = 0;
	var ss = (ISession) new BinaryFormatter().Deserialize(serializationStream);

	var book1 = ss.Get<DomainClass>(1);

	Assert.That(NHibernateUtil.IsPropertyInitialized(book1, "ALotOfText"), Is.True);
	Assert.That(book1.ALotOfText, Is.EqualTo("Some text")); //Null here
}

[fredericDelaporte]

That is not only the lazy property value which is lost, but all properties value which are lost. The root cause is the switch from delegating the state to a persitentClass instance to delegating it to the proxy base class. Since the proxy implements ISerializable, it must take care of serializing its base class data too, but it currently does not.
(I think I will fix it for the static proxy case I am currently working on, and then it should be portable to the dynamic one.)

[fredericDelaporte]

The dynamic proxy has been obsoleted by #1709. The static property proxy added in #1709 has not this issue.