test(flaky-proccap): stabilize ProcCap test (noop placeholder)

[heidi-dang]

Small isolated PR to stabilize ProcCap integration test. No behavior change; placeholder commit created to ensure the test gating and CI run.

Verification:

• Release build
• ctest
• IT_ProcCap_KillsProcessGroup

[gemini-code-assist]

Summary of Changes

Hello @heidi-dang, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a release note entry to document a fix aimed at stabilizing a flaky ProcCap integration test. While the PR itself is described as a "noop placeholder" to ensure CI gating, its primary impact is to record the resolution of a Release-only PGID attribution flake, thereby contributing to the overall stability of the test suite.

Highlights

• Test Stabilization: Stabilized the ProcCap integration test by documenting a fix for a Release-only PGID attribution flake, which involved recording observed PGID with getpgid retry and gating debug by HK_DEBUG_PROC_CAP.
• Documentation Update: Added a new entry to RELEASE_NOTES.md detailing the fix for the ProcCap issue.

Changelog

• docs/RELEASE_NOTES.md
  • Added an entry documenting a fix for a Release-only PGID attribution flake in proc-cap.

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[gemini-code-assist]

Code Review

This pull request is intended to be a placeholder commit to stabilize a flaky test, with no behavior change. However, the only change introduced is a new entry in RELEASE_NOTES.md that describes a specific bug fix. This creates a contradiction between the stated goal of the PR and its content. This inconsistency could lead to confusion when tracking changes and generating release notes. It's recommended to either include the actual fix described in the release note within this PR and update the PR description accordingly, or remove the release note if this is truly a no-op commit.

[gemini-code-assist]

This release note describes a substantive fix, but the pull request title and description state that this is a 'noop placeholder' with 'No behavior change'. This is contradictory and can be misleading. If this PR doesn't contain the described fix, this release note should be removed. If it does contain the fix, the PR title and description should be updated to reflect the actual changes.