This is an error I introduced in #10630 because I didn't know protocols
need to be explicitly inherited from in other protocol subclasses.
The added test shows the change. Basically these protocols were unusable.
These aliases were used because the class has properties called
`int` and `bytes`. I think it is better to use the shadowed types
from the builtins module. This should not change anything from the
type checking side but it improves the IDE experience[^1].
[^1]: I was using uuid recently and the aliases showed up in vscode,
I thought they were uuid special types and had to look in the stub to
know what they are.
The python type system doesn't provide a way to fully express the type of
`self.NestedClass` with inheritance but this change is still an improvement
over the `Any` annotations. The usage of `_Section` is rare and subclassing
it is even rarer so this shouldn't cause trouble.
Ali Hamdan