Hidden elements included in the underlying structures of `addrmap` and `regfile`

[krcb197]

This bug has the same root cause as #307

However, it has no functional impact on the user, simply more code being generated than should be the case.

Again, the iterator that filters out hidden elements was not being used; instances within the classes are being included for items that should be hidden. However, the iterator that makes the properties was correct so this would only be found by code inspection.