Dotted decorators on `TypedDict` classes fails for a certain package layout

Bug Report, To Reproduce, & Actual Behaviour

I'm hitting a strange error in data_structures.py with the following project structure, with a potential culprit in runtime_validation.py:

Project/
└── package/
    ├── __init__.py
    ├── data_structures.py
    └── runtime_validation.py

• Contents of data_structures.py

  import typing as tp
  import package.runtime_validation as _runtime_validation
  # from package.runtime_validation import register_runtime_validator  # Uncomment to make errors disappear
  
  deco = _runtime_validation.register_runtime_validator  # OK
  
  @_runtime_validation.register_runtime_validator  # OK
  class A: ...
  
  @_runtime_validation.register_runtime_validator  # E: Module has no attribute "register_runtime_validator"
  class TD(tp.TypedDict): ...
  

• Contents of __init__.py

  import typing as tp
  
  RUNTIME_VALIDATORS: tp.Final = ...
  
  from package.data_structures import TD
  

• Contents of runtime_validation.py

  import typing as tp
  
  from package import RUNTIME_VALIDATORS  # Comment out to make errors in `data_structures.py` disappear
  
  def register_runtime_validator(Type: type[tp.Any], /) -> type[tp.Any]:
      ...
      return Type
  

Expected Behavior

No issues

Your Environment

• Mypy version used: 1.11.1
• Mypy command-line flags: None
• Mypy configuration options from mypy.ini (and other config files): None
• Python version used: 3.10.11

Reproduce el problema utilizando la estructura y el contenido del paquete mostrados en data_structures.py, init.py y runtime_validation.py con mypy 1.11.1. Empiece rastreando cómo afecta el ciclo de importación a la búsqueda de atributos del decorador con notación de punto en la clase TypedDict. La tarea estará terminada cuando el ejemplo no informe de ningún error de atributo ausente sin descomentar la importación directa.