Type annotation parsing warning for Pydantic BaseModel private attributes

[DawnEver]

Problem Description

When using pdoc to generate documentation for Pydantic BaseModel classes, warnings appear about parsing type annotations for __pydantic_private__ and __pydantic_extra__ attributes. The warning indicates that a 'function' object is not subscriptable when trying to parse the type annotations dict[str, Any] | None.

This occurs even with simple Pydantic model definitions and affects the documentation generation process.

Steps to reproduce the behavior:

1. Install pdoc and pydantic
2. Create a Python file with the following content:

from pydantic import BaseModel

class Foo(BaseModel):
    """Test model"""
    bar: int

class Bar(BaseModel):
    """Another test model"""
    foo: Foo

3. Run pdoc foobar.py, warning appears:

Warn: Error parsing type annotation dict[str, Any] | None for pydantic.main.BaseModel.__pydantic_private__: 'function' object is 
not subscriptable(.../lib/python3.13/site-packages/pdoc/doc_types.py:123)
Warn: Error parsing type annotation dict[str, Any] | None for pydantic.main.BaseModel.__pydantic_extra__: 'function' object is not subscriptable(.../lib/python3.13/site-packages/pdoc/doc_types.py:123)

System Information

pdoc: 15.0.1
Python: 3.13.2
Platform: macOS-10.16-x86_64-i386-64bit-Mach-O
pydantic: 2.10.6