[Console] Stub window.open in serverless docs test to avoid external tab hang

[kibanamachine]

Fixes #253933

Summary

• The serverless Console test should open API Reference documentation page when open documentation button is clicked timed out at retry.try (console.ts:59) with Timed out receiving message from renderer: 300.000.
• The test switched into the external elastic.co docs tab and polled browser.getCurrentUrl() against it; a live external page keeps the renderer busy, so the WebDriver command never returns.
• This patch stubs window.open before the click to capture the URL the app would open, asserts on it in-app, and drops the switchTab / getCurrentUrl / closeCurrentWindow dance — removing the external-navigation race entirely while keeping the click-wiring coverage (openDocs → window.open with the resolved docs URL).

Context

• Follows the fix proposed by the Failed Test Investigator; the only deviation is typing the captured URL via a declare global Window augmentation instead of any/@ts-expect-error, per repo conventions.
• The failure screenshot showed the docs page fully rendered, so the feature works — this is a test-design issue, not an app bug. URL resolution is already unit-tested in getDocumentationLink.
• Same signature recurred on kibana-on-merge/main across two failures ~6 months apart (build 88600, build 108237), always on this one test that opens an external tab — pointing at the external-navigation design, not a random CI hiccup.

Verification

Verified locally

✅ Passed: node scripts/eslint x-pack/platform/test/serverless/functional/test_suites/console/console.ts

Not verified locally

• This is a serverless FTR test requiring a live Elasticsearch + Kibana, which cannot run in this environment. Behavior under CI will be exercised by the PR's own functional test run.

Backporting guidance

Applied backport:version with v9.5.3 and v9.4.6: the patched file exists at the identical path with the identical faulty pattern on the 9.5 and 9.4 release branches, so the patch applies unchanged. Excluded 8.19 — the test does not exist at this path (or the legacy x-pack/test_serverless/... path) on that branch, so no backport is needed there.

Note

Share feedback in #kibana-qa. Mention @copilot to make quick changes.

Generated by Flaky Test Fixer for #253933 · opus · 353.8 AIC · ⌖ 41.1 AIC · ⊞ 13.2K · ◷

[kibanamachine]

/flaky ftrConfig:x-pack/platform/test/serverless/functional/configs/search/config.group1.ts:30

Generated by Flaky Fix Verifier for #288197 · opus · 139.1 AIC · ⌖ 44.5 AIC · ⊞ 13.6K · ◷

[kibanamachine]

Flaky Test Runner

✅ Build triggered - kibana-flaky-test-suite-runner#14156

• x-pack/platform/test/serverless/functional/configs/search/config.group1.ts x30

[kibanamachine]

Flaky Test Runner Stats

🎉 All tests passed! - kibana-flaky-test-suite-runner#14156

[✅] x-pack/platform/test/serverless/functional/configs/search/config.group1.ts: 30/30 tests passed.

see run history

[kibanamachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: ecedad7
• Build duration: 56 mins
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Failed CI Steps

• FTR Configs #20
• FTR Configs #43

Metrics [docs]

✅ unchanged

Test Failures

• [job] [logs] FTR Configs #43 / Screenshotting Example should capture a screenshot
• [job] [logs] FTR Configs #20 / serverless observability UI - Cases and Rules Serverless Observability Cases Case View Files adds a file to the case