fix(reporter): use Screen in html reporter for PLAYWRIGHT_FORCE_TTY support

[yury-s]

Summary

• Replace direct process.stdin.isTTY checks in the HTML reporter with terminalScreen.isTTY, which respects the PLAYWRIGHT_FORCE_TTY environment variable
• Replace process.stdout.write in writeLine with terminalScreen.stdout.write for consistency

This fixes the regression introduced in #38044 where JetBrains IDEs (WebStorm, IntelliJ) stopped auto-opening the HTML report because their test runners don't set process.stdin.isTTY. Users can now set PLAYWRIGHT_FORCE_TTY=1 to work around this.

Fixes #39766

[pavelfeldman]

Looks dangerous as it will block users that opted into PLAYWRIGHT_FORCE_TTY for non-TTY CI as per our recommendation.

[github-actions]

Test results for "tests 1"

6 flaky

⚠️ [chromium-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/capabilities.spec.ts:95 › should play audio @smoke `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@chromium-ubuntu-22.04-node22`
⚠️ [webkit-library] › library/screencast.spec.ts:75 › start reuses existing screencast when video recording is running `@webkit-ubuntu-22.04-node20`

38815 passed, 845 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

1 failed
❌ [msedge] › mcp/dashboard.spec.ts:23 › should show browser session chip @mcp-windows-latest

5493 passed, 343 skipped

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Merge workflow run.