As I have seen "packaged weight" used in the past, it refers to the weight of everything you get, apart from packaging. So, if you get a repair kit and extra stakes, for example, those would show up in the packaged weight. If you get a footprint included with the tent, I would expect that to show up in the "packaged weight".

This has been my experience, but it doesn't mean I am correct in this instance. Asking is the most reliable way to find out. (Unless you ask someone who doesn't know what they are talking about!)