chore: merge FailureTracker into TestRun, pull more into TestRunOptions

[dgozman]

Summary

• Inlined FailureTracker into TestRun.
• Moved onTestPaused, preserveOutputDir, additionalReporters, and shardWeights into TestRunOptions.

[github-actions]

Test results for "MCP"

6468 passed, 383 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › ui-mode-test-network-tab.spec.ts:459 › should not preserve selection across test runs @macos-latest-node20

9 flaky

⚠️ [chromium-library] › library/video.spec.ts:342 › screencast › should work for popups `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/video.spec.ts:724 › screencast › should work with video+trace `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/video.spec.ts:481 › screencast › should capture static page in persistent context @smoke `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-library] › library/video.spec.ts:687 › screencast › should capture full viewport on hidpi `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-page] › page/page-request-continue.spec.ts:754 › propagate headers cross origin redirect after interception `@chromium-ubuntu-22.04-node22`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1080 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-select-option.spec.ts:349 › should wait for option to be enabled `@firefox-ubuntu-22.04-node20`
⚠️ [playwright-test] › ui-mode-trace.spec.ts:812 › should update state on subsequent run `@macos-latest-node20`
⚠️ [playwright-test] › ui-mode-test-output.spec.ts:118 › should collapse repeated console messages for test `@windows-latest-node20`

39150 passed, 846 skipped

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Merge workflow run.