yuzu game list shows incorrect file size for >4 GiB NAX games in the game list

[legoj15]

Starting with Canary 1676 and Nightly 1507, yuzu began showing the incorrect file size for multipart NAX games in the game list (but not the game properties window) Canary 1675 & Nightly 1506: Canary 1676 & Nighty 1507 and current builds: There are no differences in the logs of any tested yuzu version

There is also the issue of multipart NAX games not being able to dump their romfs in any version of yuzu, but that can be saved for another issue.