learning_activities field: Data migration needed for historic data in backend #3374
Description
Observed behavior
Learning activities should take into account the default on upload. Because of this new behavior, we need to do a data migration on the backend for all historic data.
Expected behavior
All resources should have a default content kind on upload to be used in determining the type of "Learning Activity".
User-facing consequences
The current feature will not have a default set on the type of resource that was uploaded.
Errors and logs
Additional information
See #3373 and PR #3370 for more details about what the feature entails.