Fix SQLAlchemy list types

[benedikt-bartscher]

No description provided.

[masenf]

a test case would be cool too, but not strictly necessary since most of this code is already untested.

[benedikt-bartscher]

@masenf I wanted to add tests later, if I have a fully working bare sqlalchemy with reflex. There are still some rough edges, f.e. with serialization, recursive/self-referencing relations and AssociationProxys. But I am getting close, most Issues are fixed in my reflex builds.
There's also #2355 which needs some love before reflex can really support bare sqlalchemy