helm-summarize fails with cannot convert float NaN to integer

[yifanmai]

Traceback (most recent call last):
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/bin/helm-summarize", line 8, in <module>
    sys.exit(main())
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/common/hierarchical_logger.py", line 104, in wrapper
    return fn(*args, **kwargs)
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/presentation/summarize.py", line 997, in main
    summarizer.write_groups()
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/presentation/summarize.py", line 919, in write_groups
    tables: List[Table] = self.create_group_tables_by_metric_group(group)
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/presentation/summarize.py", line 812, in create_group_tables_by_metric_group
    table = self.create_group_table(
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/presentation/summarize.py", line 719, in create_group_table
    self.create_cell(
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/presentation/summarize.py", line 540, in create_cell
    description = aggregate_stat.bare_str()
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/metrics/statistic.py", line 59, in bare_str
    f"min={process(self.min)}, "
  File "/u/scr/maiyifan/miniconda3/envs/helm-2023-04-29/lib/python3.8/site-packages/helm/benchmark/metrics/statistic.py", line 53, in process
    if int(x) == x:
ValueError: cannot convert float NaN to integer

[yifanmai]

Fixed by #1715.