Handle concurrent writes for Iceberg Polaris catalog

[pajaks]

Test testDeleteRowsConcurrently often fails with errors like:

Error:  Failures: 
Error:  io.trino.plugin.iceberg.catalog.rest.TestIcebergPolarisCatalogConnectorSmokeTest.testDeleteRowsConcurrently
Error:    Run 1: TestIcebergPolarisCatalogConnectorSmokeTest>BaseIcebergConnectorSmokeTest.testDeleteRowsConcurrently:171 
Multiple Failures (1 failure)
-- failure 1 --
[Rows for query [SELECT * FROM test_concurrent_delete4yww1ir2ow]] 
Expecting actual:
  (0, 1, 0, 0), (0, 0, 1, 0), (0, 0, 0, 1)
to contain exactly in any order:
  [(0, 1, 0, 0), (0, 0, 0, 1)]
but the following elements were unexpected:
  (0, 0, 1, 0)