no-setup-in-describe complains about arrow functions timeout

[perrin4869]

The following code will error, even with mocha/no-mocha-arrows turned off:

describe('my suite', () => {
  it('should pass within 2 seconds', () => { // mocha/no-setup-in-describe: Unexpected member expression in describe block. Member expressions may call functions via getters.
    // ...
  }).timeout(2000);
});

Maybe the solution would be to add an option to allow this use case?

[lo1tuma]

I would say this is a bug. It is similar to #208.