feat: adds onTimeout option to waitFor

[jmbeach]

Summary

Adds the option onTimeout?: (error: Error) => Error to the waitFor function to match the option in the non-native React Testing Library.

Test plan

I added a new test for this as well.

Useful so that you can do stuff like this:

await waitFor(() => expect(getSlotMachine().props.accessibilityState.disabled).toBeFalsy(), {
    onTimeout: (e) => {
      console.log(getSlotMachine().props.accessibilityState.disabled)
      expect(wrapper).toMatchSnapshot();
      return e;
    }
  });

[thymikee]

Looks good, thanks!