fix file sequence number assertion by duckdb

Signed-off-by: Aykut Bozkurt <aykut.bozkurt@snowflake.com>

Author: sfc-gh-abozkurt

pg_lake_iceberg/src/iceberg/metadata_operations.c

@@ -1145,8 +1145,8 @@ CreateIcebergManifestEntryFromMetadataOperation(TableMetadataOperation * operati
 	manifestEntry->has_sequence_number = true;
 	manifestEntry->sequence_number = sequenceNumber;
 
-	manifestEntry->file_sequence_number = 0;
-	manifestEntry->has_file_sequence_number = false;
+	manifestEntry->file_sequence_number = sequenceNumber;
+	manifestEntry->has_file_sequence_number = true;
 
 	SetIcebergDataFileStats(&operation->dataFileStats,
 							&manifestEntry->data_file.record_count,

pg_lake_iceberg/src/iceberg/write_manifest.c

@@ -219,7 +219,7 @@ WriteIcebergManifestEntryToAvro(IcebergManifestEntry * entry, avro_value_t * rec
 	AvroSetInt32Field(record, "status", entry->status);
 	AvroSetNullableInt64Field(record, "snapshot_id", entry->snapshot_id, entry->has_snapshot_id);
 	AvroSetNullableInt64Field(record, "sequence_number", entry->sequence_number, entry->has_sequence_number);
-	AvroSetNullableInt64Field(record, "file_sequence_number", entry->sequence_number, entry->has_file_sequence_number);
+	AvroSetNullableInt64Field(record, "file_sequence_number", entry->file_sequence_number, entry->has_file_sequence_number);
 	AvroSetRecordField(record, "data_file", (AvroSerializeFunction) WriteDataFileToAvro, &entry->data_file);
 }