Pending task results are missing task name and kwargs

[bjester]

Observed behavior

A chef script produced thousands of enqueued calculate_user_storage_tasks for the same user, which overwhelmed the task workers

Expected behavior

For most tasks, any attempts to enqueue the task should only enqueue it if there isn't already a queued or currently executing task for the same arguments

User-facing consequences

Other users actively editing channels experience long delays for operations like copying and publishing, where the UI clearly shows the progress of the operation

Errors and logs

Seems as though the fetch_or_enqueue behavior isn't working properly

INFO:root:Enqueuing task:id calculate_user_storage_task:3a505d01cb9e447f9360158b0dad61e1 for user:channel 2858:None | {'user_id': 2858}
INFO:root:Didn't fetch matching task calculate_user_storage_task for user 2858 | {'user_id': 2858}

Additional information

https://learningequality.slack.com/archives/C0LK8QS9J/p1668640815323059
celery/django-celery-results#334

Despite enabling extended results, the pending result does not have the 'extended' information

[bjester]

Closed by #3822