GitLab Runner's Kubernetes Executor Now Logs the Helper Image in CI Job Traces

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A developer contributed a change to GitLab Runner that addresses a visibility gap in the Kubernetes executor. When a custom helper image was configured, the selected image was only recorded in debug logs and not shown in the CI job trace. The Docker executor already displayed this information, making Kubernetes-based troubleshooting harder than necessary. The change, submitted as Merge Request !7778, resolves Issue #2387 and brings the Kubernetes executor's output in line with Docker's. The article also covers configuration edge cases and the regression tests added to verify the new behavior.

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