The clone source has valid format, but has unsupported feature with Delta
Source iceberg table has no partition specs in table
Source iceberg table has undergone partition evolution.
Iceberg tables that had partition columns removed can be converted without data loss by setting the SQL configuration
'spark.databricks.delta.convert.iceberg.partitionEvolution.enabled' to true.
Tables that had data columns converted to partition columns will not
be able to read the pre-partition column values.