partition_snapshot_row_cursor: Rewrite row() with consume_row()
partition_snapshot_row_cursor: Rewrite row() with consume_row()

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla