Deleting a file deletes the node it's used on

Problem/Motivation

If you delete a file that with a usage count > 0, the referring entities are deleted, instead of the references to them.
The message displayed is 'The reference from entity type %ref_type for file %file_name has been deleted.' which implies that the referring entity itself should not be deleted, only the reference to it.

Relevant code from FileDeleteForm.php:

      // Remove existing usage for the file.
      if (isset($usages['file'])) {
        foreach ($usages['file'] as $type => $entities) {
          foreach ($entities as $id => $usage_count) {
            $ref_entity = $this->entityTypeManager->getStorage($type)->load($id);
            if (!empty($ref_entity)) {
              $ref_entity->delete();

              $this->messenger()
                ->addMessage($this->t('The reference from entity type %ref_type for file %file_name has been deleted.', [
                  '%ref_type' => $ref_entity->getEntityType()->id(),
                  '%file_name' => $this->entity->getFilename(),
                ]));
            }
          }
        }
      }

Setting to critical as involves unexpected deletion of content.

Steps to replicate:
1. Add an image field to node entity
2. Create node "Test node" with image field populated
3. Visit /admin/content/files and click delete for the image added to "Test node"
4. Check both boxes for "Do you want to delete the file immediately?" and "Do you want to force this file to be deleted?"
5. Click "Delete file"

Expected:
Reference to "Test node" is removed

Actual:
The entire entity "Test node" is removed