test(page): cover file URL to about:blank navigation

[Skn0tt]

Fixes #42050

[github-actions]

Test results for "tests 1"

7 flaky

⚠️ [installation tests] › playwright-packages-install-behavior.spec.ts:24 › playwright-chromium should work `@package-installations-ubuntu-latest`
⚠️ [installation tests] › typescript-types.spec.ts:18 › typescript types should work `@package-installations-ubuntu-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:299 › should report intercepted service worker requests in HAR `@realtime-time-library-chromium-linux`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:371 › should produce network events, routing, and annotations for Service Worker `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-library] › library/video.spec.ts:736 › screencast › should work with video+trace `@chromium-ubuntu-22.04-node22`
⚠️ [firefox-page] › page/locator-query.spec.ts:276 › count() should not throw during navigation `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-ubuntu-22.04-node20`

51054 passed, 1188 skipped

---

Merge workflow run.

[github-actions]

Test results for "MCP"

1 failed
❌ [firefox] › mcp/cli-core.spec.ts:57 › click link @mcp-windows-latest-firefox

7814 passed, 1272 skipped

---

Merge workflow run.

[github-actions]

Hi, I'm the Playwright bot and I took a look at the CI failures.

🟢 CI is clear — the one failure is a pre-existing flake

This PR only adds a page-goto test; nothing here touches the MCP CLI. The single MCP failure is a known flake on the Windows/Firefox bot, and the "tests 1" report had no real failures (7 flaky only).

Details

Overall: no failure is attributable to this PR. The diff adds one test to tests/page/page-goto.spec.ts (file URL → about:blank) and changes no product code, so it can't reach the MCP CLI path.

Pre-existing flake / infra

• [firefox] › mcp/cli-core.spec.ts:57 › click link on @mcp-windows-latest-firefox — flake. In the aggregated CI results this test is passed 1362 runs, failed 10 on this bot, and 9 of those 10 failures are on unrelated work the PR can't be responsible for: PRs chore(recorder): unify action coalescing and simplify action types #41958, fix(mcp): reconnect to the browser after disconnect #41966, Revert "chore(deps-dev): bump fast-uri from 3.1.3 to 3.1.4" #41978, fix(aria): preserve names from collapsed text contributors #41988, fix(types): support branded primitives in evaluate arguments #42009, chore: mark v1.62.1 #42020 and three main pushes, spanning Jul 23–29. It fails single-attempt on this specific Windows Firefox bot regardless of the change under test.

No triage needed (tests 1)

• 7 flaky, 0 failed — nothing to attribute.

_{Triaged by the Playwright bot - agent run}