Don't add WinSCP shortcut to desktop when updating

Please don't add WinSCP shortcut to desktop when updating.

You can configure the installer not to add the shortcut, if you do not want it.
It should even remember the decision for the future installations.
https://winscp.net/eng/docs/ui_installer_selecttasks

I did some testing and it seems that if I select custom upgrade the first time I can select Full upgrade when upgrading without that shortcut 😀

I was reporting a similar issue on another application so I never thought about using custom upgrade.