[core] `chaos_many_actors` regress

[fishbone]

What happened + What you expected to happen

https://console.anyscale.com/o/anyscale-internal/projects/prj_FKRmeV5pA6X72aVscFALNC32/clusters/ses_pdhefl9rpewqfdh56e3jhrcw?command-history-section=command_history

Versions / Dependencies

master

Reproduction script

chaos_many_actors

Issue Severity

None