Fix duplicate issue creation

What does this MR do and why?

Fixes duplicate issue creation when failure issue has already been commented on in the pipeline run. Also fixes specs.

Introduced by a recent update: !1151 (merged) which returned false when the issue was already commented on, causing create_issue to run.

Screenshots or screen recordings

These are strongly recommended to assist reviewers and reduce the time to merge your change.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.