Add class when has-option-group

[mrleblanc101]

Partial Fix #1474

[mattelen]

This looks great and works nicely @mrleblanc101 - thanks for that. The only thing is that we don't want to update the build files, as they will be generated while creating the package. If you revert those changes, then we can merge this in. Thanks

[mrleblanc101]

@mattelen Yes, sorry. I fixed it !
Another project I contributed had an action that required to commit the new dist file in the PR (which is odd, I know).