Could not find name ... - when using a constant as a default value in a class method

[kilroy42]

Describe the Bug

class Object:
    BOOK = 1
    CHAIR = 2
    HOUSE = 3

    def __init__(self, typ: int = BOOK):
        self.typ = typ

print(Object().typ)

This is correct Python code, but it fails with the following error in pyrefly:

ERROR 6:35-39: Could not find name BOOK [[unknown-name](https://pyrefly.org/en/docs/error-kinds/#unknown-name)]

Sandbox Link

https://pyrefly.org/sandbox/?project=N4IgZglgNgpgziAXKOBDAdgEwEYHsAeAdAA4CeSIAxlKnHAAQDy2AVjJQC6IA669-9AEKNGAaXoBeegEZeA%2BgGEAEgEEAkgCVJ9AExyBSxgFUAygFFtAZl77%2BmGGHoB9JxHQQOLgBRwYUMAA09BykxIj0bhzawmIAlDx88gK%2B-oQhxNrpNui8xABOkV7MbJxesWmhsbwgASAArhzQcCTkiCAAxPRGjVAepPRgdeicELjocNn2jmC4eQC2qJ7odXPYMHle%2BOGRsfQAtAB89HAceQnyeTAcdXl8YNwgAHIra2f0wPgAvg-Vn7WoIwAbjAAGLQGAUNBYPBEMggT5AA&version=3.12

(Only applicable for extension issues) IDE Information

No response

[yangdanny97]

this is related to #1073, I think both should be solved together.

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