fix(ci): tolerate AWS Lambda base-image drift in the local integration suite

[CarlesDD]

What does this PR do?

public.ecr.aws/lambda/nodejs:22 and :24 were updated under their floating tags, and the new images changed runtime behavior the local Docker/RIE integration suite pins as goldens:

• The updated images emit a new runtime_worker_pool_initializing debug log record. Its workerCount field reflects the container's visible CPU count, not anything the library controls, so it can't be pinned in a snapshot without becoming flaky across machines/runners with a different CPU allocation. Added it to the existing platform-noise filter in scripts/normalize_integration_logs.sh instead of baking the value in.
• Node 24's thrown-error payload now includes a requestId field that wasn't there before. This is not new or host-dependent: the existing per-case filter in integration_tests_local/run.sh already redacts requestId to XXXX, and the Node 26 golden (manual-throw-error_node26.json) already includes it. Node 24's golden had simply not been refreshed. Regenerated just that snapshot.

Motivation

Discovered while investigating unrelated CI failures on #840

Testing Guidelines

Reproduced all four originally-failing combinations locally against the fresh base images (nodejs22.x/nodejs24.x, amd64/arm64) and confirmed they pass after this fix. Re-ran nodejs18.x/20.x/26.x to confirm no regressions.

Additional Notes

N/A

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

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