[cloudflare workerd] Workers Logs omits a native Error logged after a structured object

## Observed symptom 🐛 Bug Report — Runtime APIs: Workers Logs omits a native Error logged after a structured object For `console.error(context, error)`, where `context` is a plain object and `error` is a native `TypeError`, stored Workers Logs events contained the structured context but omitted the exception's name, message and stack. Repeating the failing request with `wrangler tail --format json` attached captured the native error in both `message` and `errorInfo`. This prevents diagnosis of a handled failure from retained logs unless a live tail was attached. The application did not stringify, wrap or nest the error before passing it as the second console argument. ## Literal error text ``` TypeError: Invalid header value. ``` ## Environment GitHub issue cloudflare/workerd #7537; state=open ## Trigger / context Public GitHub report in cloudflare/workerd (FRESH_7D). ## Source evidence - https://github.com/cloudflare/workerd/issues/7537 (2026-09-26T06:06:28Z) — evidence_class: PRIMARY_ISSUE_REPORT — GitHub issue #7537 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:43:35.178343Z - scout_id: C4710e24ff9 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.