Details
Description
This isn't currently a bug because locally-executing Pipelines and DocumentSources do not dereference their OperationContext during dispose() and destruction. However, we have established a pattern in ReshardingCollectionCloner and ReshardingTxnCloner to run a task on the cleanup executor. We should do the same with ReshardingDonorOplogIterator in ReshardingOplogApplier.