Fixes #36210 - Correct per-host Ansible exit status

[jakduch]

Summary

Fixes #36210.

Ansible 2.12 can emit a global error for a missing module on one host while continuing the playbook on other hosts. The global event provisionally marks every unfinished target with exit status 4, but later successful events did not clear that status. Successful hosts were therefore reported as failed.

Allow a subsequent runner_on_ok event to clear only the provisional global error status. Actual per-host failure (2) and unreachable (1) statuses remain unchanged, and newer Ansible versions that abort the whole playbook emit no later successful host event.

Add tests for clearing status 4 while preserving a real host failure.

Testing

• Ruby syntax checks pass
• Added focused runner unit tests; CI runs them with the repository's supported dependency bundle

AI usage disclosure

Per the community discussion on AI policy, the issue was investigated and the changes, tests, and PR wording were prepared with the assistance of Codex 5.6 Sol High. The resulting changes were reviewed before submitting. The commit also includes an Assisted-By trailer.