Fix handle special Object properties

[repsac-by]

Handling of special Object properties such as toString, __proto__, etc..

[dougwilson]

Hello, and thank you for your pull request. Unfortunately this is not going to be able to land any time soon, as downstream expects the returned object to inherit from Object.prototype, which is why cookies named things like __proto__ are ignored by this module. Returning an object that includes these named-properties ends up causing issues with consumers due to various merge utilities. Ignoring these named-cookies was done to resolve a security report.