cherry-pick(#27098): fix(har): handle invalid Expires/Max-Age

[dgozman]

Fixes #27073.

[github-actions]

Test results for "tests 1"

1 failed
❌ [chromium] › library/tracing.spec.ts:239:5 › should not include trace resources from the previous chunks

5 flaky

⚠️ [chromium] › page/page-event-request.spec.ts:101:3 › should report navigation requests and responses handled by service worker
⚠️ [chromium] › page/page-event-request.spec.ts:101:3 › should report navigation requests and responses handled by service worker
⚠️ [firefox] › library/fetch-proxy.spec.ts:30:3 › context request should pick up proxy credentials
⚠️ [chromium] › page/page-event-request.spec.ts:101:3 › should report navigation requests and responses handled by service worker
⚠️ [webkit] › library/browsercontext-add-cookies.spec.ts:428:3 › should allow unnamed cookies

25576 passed, 599 skipped
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Merge workflow run.