Deleted map file after map editor update

[2767mr]

Reported here: https://discord.com/channels/143364538958348288/276459212807340034/1205518993528717373

They saved the map using "Save as" after the update window poped up. My current suspect is that the blobs in https://github.com/CCDirectLink/crosscode-map-editor/blob/master/webapp/src/app/services/save.service.ts#L59 somehow got disposed because of the update. Another factor might be because they waited multiple seconds between actions.

I cannot reproduce it but at least we have something to go on.

[Vegita2]

the update should only happen after closing the editor