`AttributeError: 'AssignAttr' object has no attribute 'name'` in namedtuple brain

[correctmost]

Steps to reproduce

The following code triggers an AttributeError in astroid:

from typing import NamedTuple

class C(NamedTuple):
    a.b: str

C()

I found the bug during a local fuzzing run.

Current behavior

Traceback (most recent call last):
  File "pylint/pylint/checkers/utils.py", line 1378, in safe_infer
    value = next(infer_gen)
  File "astroid/astroid/nodes/node_ng.py", line 160, in infer
    for i, result in enumerate(self._infer(context=context)):
                     ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "astroid/astroid/decorators.py", line 79, in inner
    yield next(generator)
          ~~~~^^^^^^^^^^^
  File "astroid/astroid/decorators.py", line 42, in wrapped
    for res in _func(node, context):
               ~~~~~^^^^^^^^^^^^^^^
  File "astroid/astroid/nodes/node_classes.py", line 1763, in _infer
    for callee in self.func.infer(context):
                  ~~~~~~~~~~~~~~~^^^^^^^^^
  File "astroid/astroid/nodes/node_ng.py", line 160, in infer
    for i, result in enumerate(self._infer(context=context)):
                     ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "astroid/astroid/decorators.py", line 79, in inner
    yield next(generator)
          ~~~~^^^^^^^^^^^
  File "astroid/astroid/decorators.py", line 42, in wrapped
    for res in _func(node, context):
               ~~~~~^^^^^^^^^^^^^^^
  File "astroid/astroid/bases.py", line 185, in _infer_stmts
    for inf in stmt.infer(context=context):
               ~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "astroid/astroid/nodes/node_ng.py", line 140, in infer
    for result in self._explicit_inference(
                  ~~~~~~~~~~~~~~~~~~~~~~~~^
        self,  # type: ignore[arg-type]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        context,
        ^^^^^^^^
    ):
    ^
  File "astroid/astroid/inference_tip.py", line 67, in inner
    raise e from None
  File "astroid/astroid/inference_tip.py", line 64, in inner
    result = _cache[func, node, context] = list(func(node, context))
                                                ~~~~^^^^^^^^^^^^^^^
  File "astroid/astroid/brain/brain_namedtuple_enum.py", line 577, in infer_typing_namedtuple_class
    annassign.target.name
AttributeError: 'AssignAttr' object has no attribute 'name'. Did you mean: 'frame'?

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "pylint/pylint/utils/ast_walker.py", line 87, in walk
    callback(astroid)
    ~~~~~~~~^^^^^^^^^
  File "pylint/pylint/checkers/base/basic_checker.py", line 475, in visit_expr
    inferred = utils.safe_infer(expr) if name[:1].isupper() else None
               ~~~~~~~~~~~~~~~~^^^^^^
  File "pylint/pylint/checkers/utils.py", line 1382, in safe_infer
    raise AstroidError from e
astroid.exceptions.AstroidError

Expected behavior

No crash

Version info

cec5b897
pylint-dev/pylint@5ba4f69e7
Python 3.14.7

The crash also affects Pylint 4.0.7