really sorry about that, but Godot 4 has a some issues (related to some memory accessing leaks in polygon2d calculation which was done roughly fast for the jam and I didn't have enough time to deal with issue causing that, as well I'm not being sure if it worth it at all) with web exporting
I'm feeling so bad about that impulsive 4th version pick for the jam, because a lot of people forced to download it in order to play and it has a less conversion :c
but, at least, there are post processing with don't work anyways in web export =D