Allow for aria-describedby prop on Checkbox input

[danparnella]

Currently, the aria-describedby value can only be set to an input error and otherwise is set to null [Reference]. Ideally, we can pass in an ariaDescribedby prop that would be used as the fallback when there is no input error.

[chawes13]

I believe you can override aria-describedby by passing in that prop exactly to the component (unless filterInvalidDOMProps overrides that. The issue with that though is that it should not override aria-describedby when there is an error

Example: https://codesandbox.io/s/adoring-wozniak-mf4ys