mock-array is unstable

[maliberty]

Describe the bug

mock-array randomly fails with

Error: setting user power activity had no effect, expected some loss in accuracy

For example in https://jenkins.openroad.tools/job/OpenROAD-Public/job/PR-9059-merge/1/pipeline-overview/?selected-node=335

Expected Behavior

Consistent results

Environment

head of OR

To Reproduce

See the CI

Relevant log output

Screenshots

No response

Additional Context

No response

[maliberty]

I suggest trying *SAN to see if they flag anything.

[oharboe]

Sibling issue? #9067