CI: CTest align ci-pr-action & ci-regression-checks

[xsscx]

Pre Merge Report

2026-08-17 17:58:15 UTC

TODO Summary

1. CTest run in ci-pr-action do not equal ci-regression-checks
2. PR indicates Merge Ready whereas we do not want this yet to Merge because ci-regression-checks did in fact Fail
3. Unify & Align re-usable workflow stub so its included in ci-pr-action
4. Resolve the Stub Divergence

Originally posted by @xsscx in #2188 (comment)

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