Function index_deletes 

async fn index_deletes<'a>(
    binding: &IcebergUpdateBinding,
    table: &Table,
    manifests: impl Iterator<Item = &'a ManifestFile>,
    max_sequence: i64,
) -> ConnectorResult<BTreeMap<String, DeleteEntry>>

Rejects multiple live delete artifacts for one data file across manifests, which must all belong to one snapshot.