 Types for complex.__new__ should be any numeric type

The types for the arguments to `complex.__new__` should be any numeric type, not just float.

```
c1 = complex(1, 2)
c2 = complex(1, c1)
```

This code is valid, but the second line reports an error that complex is incompatible with float.

https://github.com/python/typeshed/blob/f550c24886d5daa84b70fe2960b93fa05ea2eb0b/stdlib/builtins.pyi#L368