Drupal\node\Entity\NodeType wrong namespace for DRUPAL_OPTIONAL

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to the Core change policies → .

Working on this.

Please review.

All the constants are written this way vs changing a single constant we should determine if all constants need to be updated.

I would prefer to fix this as part of 📌 Each class using DRUPAL_* constants from system.module should define its own constants Needs work for a much cleaner solution.