Codecheck gives false postive error of extra fields not permitted

[peter9711]

Describe the bug
Codecheck gives false postive error of extra fields not permitted (maybe when field name starts with model_?)

To Reproduce

from pydantic import BaseModel, ConfigDict


class Cls(BaseModel):
    model_config = ConfigDict(extra="forbid")

    model_233: str

a=Cls(model_233="bert")
print(a)

Codecheck gives the following error:
'model_233' extra fields not permitted

Expected behavior
No errors in codecheck.

Environments (please complete the following information):

• IDE: PyCharm 2025.2.0.1 Build #PY-252.23892.515, built on August 12, 2025
• OS: Windows 11 Pro 24H2
• Pydantic Version 2.11.7
• Plugin version 0.4.19