Override getConfigurationTypeFromSerialized for GlobalStack
Override getConfigurationTypeFromSerialized for GlobalStack

CURA-3975

GlobalStack has metadata type "machine", which is different from what is
registered in the VersionUpgradeManager "machine_stack". This commit
makes sure that Cura can find the correct upgrade route for the
GlobalStack files.

fieldOfView/Cura,fieldOfView/Cura,Curahelper/Cura,Curahelper/Cura