[Updater] Won't relaunch with custom CLI parameters

[tony971]

Hi, I use Dolphin with a CLI parameter specifying my own user directory. I'll either do this through a launcher or by launching through a Windows shortcut. It works as intended. However, the updater won't relaunch Dolphin with the same parameters after updating. It always launches Dolphin from its default executable (which can't specify a custom user direcotry).