fix(tracing): include source for tracing.group(location)

[Skn0tt]

Closes #39302

[github-actions]

Test results for "tests 1"

11 failed
❌ [playwright-test] › expect.spec.ts:603 › should print expected/received before timeout @macos-latest-node20
❌ [playwright-test] › expect.spec.ts:622 › should print pending operations for toHaveText @macos-latest-node20
❌ [playwright-test] › expect.spec.ts:642 › should only highlight unmatched regex in diff message for toHaveText with array @macos-latest-node20
❌ [playwright-test] › loader.spec.ts:306 › should filter stack trace for web-first assertions @macos-latest-node20
❌ [playwright-test] › playwright.artifacts.spec.ts:165 › should work with screenshot: only-on-failure @macos-latest-node20
❌ [playwright-test] › playwright.artifacts.spec.ts:192 › should work with screenshot: on-first-failure @macos-latest-node20
❌ [playwright-test] › playwright.artifacts.spec.ts:367 › should work with trace: on-all-retries @macos-latest-node20
❌ [playwright-test] › playwright.artifacts.spec.ts:403 › should work with trace: retain-on-first-failure @macos-latest-node20
❌ [playwright-test] › playwright.spec.ts:485 › should work with video: on-first-retry @macos-latest-node20
❌ [playwright-test] › playwright.trace.spec.ts:137 › should not throw with trace: on-first-retry and two retries in the same worker @macos-latest-node20
❌ [playwright-test] › reporter-base.spec.ts:259 › merged › should print if globalTimeout is reached @macos-latest-node20

1 flaky

⚠️ [webkit-library] › library/browsertype-connect.spec.ts:736 › launchServer › should upload a folder `@webkit-ubuntu-22.04-node20`

38560 passed, 843 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

4883 passed, 135 skipped

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Merge workflow run.