Antalya 25.6.5 add test instability metrics to workflow report

[strtgbb]

Changelog category (leave one):

• CI Fix or Improvement (changelog entry is not required)

Add a measure of test instability to the workflow report to help triage test failures.

Instability is broken down by check_name and test_name as some tests are only unstable under sanitizers.
Only the last 4 weeks of data is looked at to allow the metric to decay once a test is fixed.

Exclude tests:

• Fast test
• Integration Tests
• Stateless tests
• Stateful tests
• Performance tests
• All with ASAN
• All with TSAN
• All with MSAN
• All with UBSAN
• All with Coverage
• All with Aarch64
• All Regression
• Disable CI Cache

[github-actions]

Workflow [PR], commit [ad3281d]

[strtgbb]

Issues with the current implementation:

• Adding tests changes what group they are in and thus check_name, this results in an inaccurate calculation.
• It is slow, report generation time increased from 15-20s to 30-50s. Maybe it should be a CLI option.

I could track just test_name, this solves the changing check_name issue, but we lose info about the effects of sanitizers.
Alternatively, I could make the code smart enough to ignore the check_name group number, at the cost of complexity and runtime.

[strtgbb]

Report https://s3.amazonaws.com/altinity-build-artifacts/998/ad3281d439d6d71588fea15e0147825155625faf/ci_run_report.html