Support recursive definitions for functional namedtuples #2529
Description
E.g., Mypy and Pyright both support this:
from typing import NamedTuple
NT = NamedTuple("NT", [("field", "NT | int")])
NT(1)
NT(NT(0))
NT("foo") # error{{ message }}
E.g., Mypy and Pyright both support this:
from typing import NamedTuple
NT = NamedTuple("NT", [("field", "NT | int")])
NT(1)
NT(NT(0))
NT("foo") # error