Feature Request: Support concurrent, atomic INSERT OVERWRITE for individual partitions

[botan]

In a typical backfilling scenario, we want to reprocess multiple dates in a date-partitioned table, with separate parallel dag runs handling each date. Could DuckLake support a partition-scoped INSERT OVERWRITE that atomically replaces the selected partition in a single commit? Similar functionality is available in both Iceberg and Delta, so it would be great to have it in DuckLake as well.