Fix assertion for test_deserializeDefinitionChanges
Fix assertion for test_deserializeDefinitionChanges

Copy-paste error there. Sorry.

Contributes to issue CURA-3497.

ynotstartups/Wanhao,hmflash/Cura,Curahelper/Cura,fieldOfView/Cura,fieldOfView/Cura,ynotstartups/Wanhao,hmflash/Cura,Curahelper/Cura