fix(types): Pick email & userId for loginUserWithUserAttributes

[kendepelchin]

I started implementing intercom in a react-native project and when I looked at the types for loginUserWithUserAttributes I saw that i could pass the following:

export type UserAttributes = {
  companies?: Company[];
  customAttributes?: CustomAttributes;
  email?: string;
  languageOverride?: string;
  name?: string;
  phone?: string;
  signedUpAt?: number;
  unsubscribedFromEmails?: boolean;
  userId?: string;
};

This didn't seem to work, as I needed to login first, and update the user after. All data I passed to this function was ignored (besides email & userId).
If I look at the native implementation I can see that only email & userId can be provided to the loginUserWithUserAttributes function.

If I missed anything, feel free to guide me towards the proper implementation.

Thanks for making this open source 🙏