Behat dashboard test sometimes failing

[EJMFarrow]

Pretty sure this has happened a few times but often it's fine. Potentially a randomisation issue but output looks odd even for that. Will investigate.

https://github.com/maths/moodle-qtype_stack/actions/runs/22068401057/job/63766219393

001 Scenario: Add a second test, and deploy variants from a list. # /home/runner/work/moodle-qtype_stack/moodle-qtype_stack/moodle/public/question/type/stack/tests/behat/create_preview_edit.feature:251
      Then the following fields match these values:               # /home/runner/work/moodle-qtype_stack/moodle-qtype_stack/moodle/public/question/type/stack/tests/behat/create_preview_edit.feature:296
        The 'Penalty' value is '10.1', '' expected