PYI026/type-alias-without-annotation false positives with None in Enum

[Avasam]

class VariablePolicy(Enum):
    EXPAND_DISTRIBUTED_VARIABLES = "expand_distributed_variables"
    NONE = None
    SAVE_VARIABLE_DEVICES = "save_variable_devices"

(taken from https://github.com/python/typeshed/blob/ed7f35a2bc53610d5166cbccbb965fc97cfdbac4/stubs/tensorflow/tensorflow/saved_model/experimental.pyi#L34-L37 )

Running ruff check --fix --select=PYI026 results in:

stubs\tensorflow\tensorflow\saved_model\experimental.pyi:36:5: PYI026 [*] Use `typing_extensions.TypeAlias` for type alias, e.g., `NONE: TypeAlias = None`
Found 1 error.
[*] 1 fixable with the `--fix` option.

Version: ruff 0.4.1

[AlexWaygood]

Yup. I think we just need to port over the fix I made the other week in PyCQA/flake8-pyi@1279f1e. Should be pretty simple.

How's your Rust — fancy making a PR? :-) If not, I can do it

[Avasam]

How's your Rust

Its in my news cycle, other than that I never touched Rust, but I'm considering it next time I wanna (and have time to) learn a new language.