docstring-missing-returns (DOC201) reports on __new__

[tjkuson]

Running ruff check --select DOC201 --preview --isolated on

class Foo:
    def __new__(cls, x: int) -> "Foo":
        """A very helpful docstring.

        Args:
            x: An integer.
        """
        ...  # Do something with x.
        return super().__new__(cls)

reports a docstring-missing-returns (DOC201) diagnostic.

The expected behaviour is that the return value of a __new__ method is not expected to be documented as it simply returns an instance of the class.

Related to #8085

Search terms: DOC201, docstring-missing-returns, __new__