mypy doesn't catch inheritance of outer class

[injust]

Bug Report

Inheriting from an outer class raises NameError at runtime, but mypy doesn't catch this.

To Reproduce

class Foo:
    class Bar(Foo):
        pass

Expected Behavior

Actual Behavior

Success: no issues found in 1 source file

Your Environment

• Mypy version used: 1.14.0
• Python version used: 3.13