fix(analyzer): preserve LangExtract YAML options

[hexsm]

Change Description

Preserve LangExtract recognizer constructor options when loading recognizers from YAML registry configuration.

This adds dedicated YAML validation models for:

• BasicLangExtractRecognizer, preserving config_path
• AzureOpenAILangExtractRecognizer, preserving config_path, model_id, azure_endpoint, api_key, and api_version

Previously these fields were dropped during Pydantic validation / serialization, so the registry loader could not pass them to the recognizer constructors.

A changelog entry and regression tests were added.

Issue reference

N/A

Checklist

• I have reviewed the contribution guidelines
• I agree to follow this project's Code of Conduct
• I confirm that I have the right to submit this contribution and that it does not knowingly contain proprietary or confidential code.
• My code includes unit tests
• All unit tests and lint checks pass locally
• My PR contains documentation updates / additions if required

[hexsm]

I noticed that this PR duplicates the changes already covered by #2157, which preserves LangExtract recognizer YAML options during recognizer registry validation.

To avoid splitting review effort, I’m closing this PR in favor of #2157.