Fix checking if container stack exists
Fix checking if container stack exists

It was checking a container stack ID against the definition containers, which doesn't match.

Contributes to issue CURA-3973.

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