allowUnknownOption missing in .copyInheritedSettings()?

[aweebit]

#1557 shows that the allowUnknownOption setting was already available at the time when .copyInheritedSettings() was introduced. Is there a particular reason why it was not included in the inherited settings unlike the very similar allowExcessArguments, or was it simply forgotten? If so, should it be added?

[shadowspawn]

This is as intended. I think allowUnknownOption is more likely to apply to particular commands than all commands. So somewhat like .passThroughOptions(), for special cases.

(I don't consider allowUnknownOption a first-class feature. It is a bit of a simple historical "hack" that just turns off the error handling. Hopefully it does help in some hybrid parsing scenarios!)