Typing issue with chex.dataclass

Static type checkers like pyright, mypy, etc. will think `chex.dataclass`-decorated dataclass has a constructor with no parameters.

Example:

```
@chex.dataclass(frozen=True)
class Foo:
a: int
b: int
```

However, `Foo()` is not a valid call: A legitimate call would be something like `Foo(a=1, b=2)`. This does not agree with static type checker's analysis.

Compare the behavior with built-in dataclass: