Fix codecov discrepancy between main and other branches

[kumaranvpl]

Why are these changes needed?

Related issue number

Closes #890

Checks

• I've included any doc changes needed for https://docs.ag2.ai/. See https://docs.ag2.ai/docs/contributor-guide/documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Flag	Coverage Δ
3.10	57.48% <100.00%> (+0.65%)	⬆️
3.11	57.39% <100.00%> (+22.64%)	⬆️
3.12	54.37% <100.00%> (?)
3.13	59.13% <100.00%> (+23.38%)	⬆️
3.9	66.01% <100.00%> (+30.62%)	⬆️
anthropic	37.09% <100.00%> (?)
autobuild	16.78% <100.00%> (?)
bedrock	15.96% <100.00%> (?)
browser-use	29.70% <100.00%> (-4.35%)	⬇️
cerebras	15.69% <100.00%> (?)
cohere	15.73% <100.00%> (?)
commsagent-discord	30.08% <100.00%> (ø)
commsagent-slack	30.06% <100.00%> (ø)
commsagent-telegram	30.01% <100.00%> (ø)
crawl4ai	29.79% <100.00%> (-3.56%)	⬇️
deepseek	32.45% <100.00%> (?)
docs	28.79% <100.00%> (ø)
gemini	38.95% <100.00%> (?)
graph-rag-falkor-db	28.27% <100.00%> (ø)
groq	15.71% <100.00%> (?)
interop	29.65% <100.00%> (-4.00%)	⬇️
jupyter-executor	30.85% <100.00%> (ø)
lmm	18.88% <100.00%> (?)
long-context	14.89% <100.00%> (?)
macos-latest	59.45% <100.00%> (+2.12%)	⬆️
mistral	15.43% <100.00%> (?)
ollama	16.09% <100.00%> (?)
openai	44.20% <100.00%> (?)
retrievechat	29.77% <100.00%> (+0.04%)	⬆️
retrievechat-mongodb	29.76% <100.00%> (+1.20%)	⬆️
retrievechat-pgvector	29.76% <100.00%> (+1.20%)	⬆️
retrievechat-qdrant	29.69% <100.00%> (+1.21%)	⬆️
teachable	17.88% <100.00%> (?)
together	15.74% <100.00%> (?)
twilio	28.48% <100.00%> (ø)
ubuntu-latest	67.33% <100.00%> (+9.34%)	⬆️
websurfer	17.85% <100.00%> (?)
windows-latest	57.88% <100.00%> (+2.84%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
autogen/version.py	100.00% <100.00%> (ø)

... and 32 files with indirect coverage changes