feat: update 4JLibs & add win64 to splitsave case

Minecraft.World/RegionFileCache.cpp

@@ -9,6 +9,7 @@ bool RegionFileCache::useSplitSaves(ESavePlatform platform)
 {
 	switch(platform)
 	{
+	case SAVE_FILE_PLATFORM_WIN64:
 	case SAVE_FILE_PLATFORM_XBONE:
 	case SAVE_FILE_PLATFORM_PS4:
 		return true;