BucketEventsListener truncates all analytics collections on open stream rollback response

In the event that KV indicates on a stream request that we need to rollback, today we rollback all datasets in the bucket- this is a leftover from before streams were utilized (pre-collections). It could be the case that only the collection(s) covered by that particular stream need to be rolled back. Rolling back all collections on the bucket results in unnecessary re-streaming of all collections from KV.

The logic should be refined to only truncate collection(s) affected by the rollback response from KV.