Reference Issues/PRs

Addresses this comment : #32797 (comment)

What does this implement/fix? Explain your changes.

Instead of opening a single issue if any of the tests in the matrix failed, now independent issues for each matrix entry are generated.

Also allow the update tracking issue action to trigger on manually triggered actions.

AI usage disclosure

I used AI assistance for:

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Any other comments?

It is a bit more complex to achieve than what I anticipated. I could not do it using a job running after all the matrix jobs of unit-tests, as github does not allow to access all outptuts of a matrix of jobs, so only a global status of the whole matrix ("success" if all jobs succeeded, "failure" if at least one failed) can be obtained in another job.

Thus I had to use an extra step in the unit-tests job, but using another workflow (i.e. uses: ./.github/workflows/update_tracking_issue.yml) cannot be done as a step, only as a job, so I had to re-implement it, creating some code duplication. But it also allowed to tweak the CI log URL to point to the log of the specific job rather than the whole workflow. And since github does not expose the job id necessary for this URL, I also had to add a step to get this id using the REST API.

I tested it on my fork, for example it created and commented FrancoisPgm#23