distro: handle opentelemetry-instrumentation-logging LoggingHandler as the sdk one

[xrmx]

What does this pull request do?

With recent releases the opentelemetry-instrumentation-logging LoggingHandler is used if installed and so we need to consider that as well when deciding to propagate.

Related issues

Closes #551

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Enterprise

Run ID: cb7575ad-31a6-4110-a11b-d3463667e3a0

📥 Commits

Reviewing files that changed from the base of the PR and between 4a8805e and 8c4457c.

📒 Files selected for processing (1)

• src/elasticotel/distro/config.py

📝 Walkthrough

Walkthrough

This PR adds conditional import handling and fallback logic for LoggingHandler to support both the instrumentation package and SDK implementations. The config.py propagate determination now checks for both handler types. Test coverage is expanded with a new test for the SDK handler scenario and skipIf guards for the instrumentation-dependent test. Development dependencies are updated (certifi, wrapt, opentelemetry-instrumentation-logging) and pyproject.toml dev dependencies are reformatted from single-line to multi-line structure.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The PR implements the required logging propagation logic to recognize LoggingHandler from both opentelemetry-instrumentation-logging and the deprecated SDK.
Out of Scope Changes check	✅ Passed	All changes directly address the linked issue. Dependency updates and test adjustments support the core logging handler logic changes.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch handle-logging-handler

• 🛠️ Update Documentation

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