react/prop-types warns about destructured spread `other` properties

[rocketraman]

Sometimes a component does not care about various properties it receives -- they are just passed on to children as-is, and as per the FB docs the canonical way to do this is via a destructuring assignment with a spread operator on the last variable.

prop-types warns that props validation is missing for that other variable:

warning  'other' is missing in props validation  react/prop-types

I don't think react/prop-types should raise a warning about these "other" properties.