Request.parser_context is typed as possibly None while it never can be None

[PureTryOut]

What's wrong

rest_framework.request.Request.parser_context is typed as possibly being None. However according to the constructor of the Request class it can never actually be None because if it is it would be set to an empty dict instead, see https://github.com/encode/django-rest-framework/blob/master/rest_framework/request.py#L171.
Due to this wrong typing I now either have to code for an impossible scenario or disable a mypy rule, both I rather not do.

How is that should be

It should be typed as just dict[str, Any] rather than dict[str, Any] | None.

System information

• OS: Alpine Linux
• python version: 3.11.5
• django version: 4.2
• mypy version: 1.5
• django-stubs version: 3.14.2