Fix flakey evaluation form system specs

[stepchud]

What/Why

As a developer, I want a stable CI build that doesn't give false negative results which slow development.
We have seen a few of the specs in spec/system/evaluation_form_spec.rb fail at random times on CircleCI and sometimes local dev.

Failing specs:

• evaluation_form_spec.rb:262 # Evaluation Form update evaluation form page allows removing existing criteria
  • Occurences: **
• evaluation_form_spec.rb:206 # Evaluation Form update evaluation form page allows editing of an existing form values
  • Occurences: *

These are from the same PR that was not updating eval forms:

Acceptance Criteria

• the rspec step on CircleCI passes 5 times in a row when run from the start

NOTE: the "Re-run workflow from start" option has been observed to have more success than "Re-run workflow from failed" on CircleCI