If column editing is enabled at GetAdditionalColumnsSetup2(IListViewEx, String, DictionaryString, Boolean, ListString, ListString)
then this must be true to allow editing columns of this particular item. However, editing will not be
enabled if also WritebackInplaceEdits is enabled but this item's writeback target is not in correct file access state.
In SW, the file must not be readonly. In PDM client side, either we must have write access to NOTHING or we must have write access to
the edited file.
AllowInplaceEdits is false by default.