Unpublished course nodes can be configured in scoring rules

How to reproduce

• Create a couse
• Add a SCORM course element, but don't configure a SCORM module
• In the root node, configure a scoring rule
  => SCORM node shows up even though not publishable and not yet published

• publish
• open course run
  => shows a score of -9999999 due to missing SCORM node

Unsure how to fix. The rule that nodes must be published create usability issues. Maybe nodes that don't exist should create a SCORE of 0 instead of -9999999?