More specific exception catching

So that we can still find programming errors in this code.

Contributes to issue CURA-4606.

cura/Machines/Models/QualitySettingsModel.py

@@ -101,7 +101,7 @@ class QualitySettingsModel(ListModel):
             if quality_changes_node is not None:  # it can be None if number of extruders are changed during runtime
                 try:
                     quality_containers.insert(0, quality_changes_node.getContainer())
-                except:
+                except RuntimeError:
                     # FIXME: This is to prevent incomplete update of QualityManager
                     Logger.logException("d", "Failed to get container for quality changes node %s", quality_changes_node)
                     return