Update 43c: Level Editor Prefab and New York (Winter) fixes — Perfect Heist 2 Steam update #55245

Map Changes: New York City (Winter): fixed aurora borealis FX having collision, blocking Heavy's helicopter Level Editor: potential fix for level editor stairways resulting in weird behavior when characters used them at high speeds fixed prefab getting moved directly to a harddrive folder (like "C:/") if it got added to a map with an empty name (for example, after opening the level editor and then adding a prefab, and not loading/saving a map beforehand) fixed bugged "ghost" object that always was hidden and at 0,0,0 appearing on the level editor actor list fixed placed prefabs showing up as a prefab object and as an unpacked folder, even if they weren't unpacked yet fixed level editor objects that reset ever yround (like "Vent Door" or "AI Customer") not working correctly inside prefabs