LangChain Tool SubComponent Gating

[TimPansino]

Overview

• Remove subcomponent attributes from LangChain tools when a known remote tools is found.
  • This prevents duplicate tool entities from being generated in the UI when the remote server is also instrumented.
• Add tests against a real MCP server to LangChain to verify remote tool behavior.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	9		0	0	1.17s
✅ MARKDOWN	markdownlint	7	0	0	0	1.5s
✅ PYTHON	ruff	1065	0	0	0	1.19s
✅ PYTHON	ruff-format	1065	0	0	0	0.37s
✅ YAML	prettier	23	0	0	0	1.71s
✅ YAML	v8r	23		0	0	6.9s
✅ YAML	yamllint	23		0	0	0.8s

Notices

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.99%. Comparing base (d9a1079) to head (651931a).

Files with missing lines	Patch %	Lines
newrelic/hooks/mlmodel_langchain.py	82.35%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1791      +/-   ##
==========================================
- Coverage   82.06%   81.99%   -0.07%     
==========================================
  Files         216      216              
  Lines       26786    26799      +13     
  Branches     4238     4242       +4     
==========================================
- Hits        21981    21973       -8     
- Misses       3339     3356      +17     
- Partials     1466     1470       +4     

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