Performance test fails: tests/ert/performance_tests/test_obs_and_responses_performance.py::test_speed_performance_of_doing_es_update

[berland]

$ pytest tests/ert/performance_tests/test_obs_and_responses_performance.py::test_speed_performance_of_doing_es_update[setup_es_benchmark0]

gives the error:

polars.exceptions.DuplicateError: column with name 'param_0_right' already exists

A git bisect points to this commit as the culprit: 9f8d446