`DocList` does not generate a correct JSONSchema; the schema of the documents in the doclist do not show up: ```python from docarray import BaseDoc, DocList import pydantic class Doc(BaseDoc): ... print(pydantic.schema_of(DocList[Doc])) print(pydantic.schema_of(List[Doc])) class DocDoc(BaseDoc): docs: DocList[Doc] print(print(DocDoc.schema())) ``` This is the cause of OpenAPI through FastAPI not working properly, as seen in #1449