Fixes issue https://github.com/graphql-python/graphene-sqlalchemy/issues/234. The regression was introduced in https://github.com/graphql-python/graphene-sqlalchemy/commit/9a0f7400957c5b5f5f8e952db2502ef1f79fac1f.

Custom resolve_<field_name> functions were no longer call for fields auto-generated by SQLAlchemyObjectType. The issue was caused by a soon-to-be-documented feature that allows users to rename auto-generated fields (aka ORMField.model_attr).