Cannot annotate attribute which is already annotated in class body

[migeed-z]

Describe the Bug

class A:
    _x: int

    def __init__(self, x:int):
        self._x: int = x # E: Cannot annotate attribute `_x`, which is already annotated in the class body 

Pyright doesn't emit that error. The annotations are consistent. Why do we complain?

I can take a look at it.

Sandbox Link

https://pyrefly.org/sandbox/?code=MYGwhgzhAECCBcAoaLoH0Ae9oEsB2ALosqgCYCmAZumvjgWmgBQTkiUA00W+BAlElRDordgDpM2XtAC83IA

(Only applicable for extension issues) IDE Information

No response