IndexError when inferring function arguments

[correctmost]

Steps to reproduce

The following code triggers an IndexError in astroid:

def f(x, *y, y: tuple[x]):
    pass

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/bases.py", line 185, in _infer_stmts
    for inf in stmt.infer(context=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/nodes/node_classes.py", line 453, in _infer
    stmts = list(self.assigned_stmts(context=context))
  File "astroid/astroid/protocols.py", line 526, in _arguments_infer_argname
    yield from self.default_value(name).infer(context)
               ~~~~~~~~~~~~~~~~~~^^^^^^
  File "astroid/astroid/nodes/node_classes.py", line 952, in default_value
    return self.defaults[idx]
           ~~~~~~~~~~~~~^^^^^
IndexError: list index out of range

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/variables.py", line 3485, in visit_subscript
    inferred_slice = utils.safe_infer(node.slice)
  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