Preserve external threat-detection retry diagnostics across jobs (#75362)

* Initial plan

* Include external detection retry diagnostics in artifact upload

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

* Regenerate external detection workflow locks

Co-authored-by: gh-aw-bot <259018956+gh-aw-bot@users.noreply.github.com>

* Update WASM threat detection golden fixtures

Co-authored-by: gh-aw-bot <259018956+gh-aw-bot@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
Co-authored-by: gh-aw-bot <259018956+gh-aw-bot@users.noreply.github.com>

Author: 3 people