valid-expect does not work with then

Hello, I have a problem with `jest/valid-expect` rule, it seems to not work when I put a `.then` after a `.rejects` or a `.resolves` like this:

```
return expect(functionReturningAPromise()).resolves.toEqual(1).then(() => {
    expect(someMock).toHaveBeenCalledTimes(1);
});
```

When I disable the rule `jest/valid-expect` or I remove the `.then` it works well.