feat(span-streaming): Add experimental trace_lifecycle switch (1)

[sentrivana]

• Add a new experimental trace_lifecycle option (used in follow up PRs)
• Add a new util function for checking which mode the SDK is in

Chipping away at #5317 to transform it into reviewable and mergeable PRs.

[github-actions]

Semver Impact of This PR

🟡 Minor (new features)

📋 Changelog Preview

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New Features ✨

• feat(span-streaming): Add experimental trace_lifecycle switch (1) by sentrivana in #5397

Bug Fixes 🐛

• fix(arq): handle settings_cls passed as keyword argument by nc9 in #5393
• fix(dramatiq): cleanup isolated scope and transaction when message is skipped by frankie567 in #5346
• fix(google-genai): deactivate google genai when langchain is used by shellmayr in #5389

Internal Changes 🔧

• ci: migration to the new codecov action by MathurAditya724 in #5392

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_{🤖 This preview updates automatically when you update the PR.}

[github-actions]

Codecov Results 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 5.99s

All tests are passing successfully.

❌ Patch coverage is 25.00%. Project has 13646 uncovered lines.

Files with missing lines (178)

File	Patch %	Lines
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