Currently, when checking that the collection has been loaded, only the first
record is checked. In specific scenarios, if a record is fetched via an `after_initialize`
hook, there is a chance that the first record has been loaded, but other records in the
collection have not.

In order to successfully short circuit the fetching of data, we need to verify that
all of the records in the collection have been loaded.

* Create test for edge case
* Move `reset_callbacks` method to `cases/helper`, since it has been defined in multiple
  locations.

Closes #37730