Kostas Karmas 4f97089e47 Fix losing global quality changes when reading a 3MF with a CFFF
By using "pass" when the IndexError occured while reading the quality changes, empty quality
changes containers were added to the registry. These empty quality changes were then used as
"global" quality_changes, since the container registry was simply picking the first quality
changes instance container that had an empty extruder stack. Therefore, the correct global
quality changes (that actually had the global settings that were changed, like the support)
was just ignored in the whole process.

CURA-7549
2020-07-07 10:43:02 +02:00
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