should error on dataclasses field but has no type annotation

[asukaminato0721]

Describe the Bug

from dataclasses import dataclass, field

@dataclass
class F:
    idx = field(default=1)
    another: int

Traceback (most recent call last):
  File "<python-input-0>", line 3, in <module>
    @dataclass
     ^^^^^^^^^
  File "/usr/lib/python3.14/dataclasses.py", line 1442, in dataclass
    return wrap(cls)
  File "/usr/lib/python3.14/dataclasses.py", line 1432, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
                          frozen, match_args, kw_only, slots,
                          weakref_slot)
  File "/usr/lib/python3.14/dataclasses.py", line 1090, in _process_class
    raise TypeError(f'{name!r} is a field but has no type annotation')
TypeError: 'idx' is a field but has no type annotation

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(Only applicable for extension issues) IDE Information

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