Only update progress once on 0 records migrated
Only update progress once on 0 records migrated

Also prevent multiple progress updates when `attempted` is evenly divisible by `chunk_size`, which is likely to happen when the number of records being migrated is much less than the total number of records being iterated.
dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq