Remove provider name from local agent span

[lmolkova]

SemConv PR: open-telemetry/semantic-conventions-genai#289

[Copilot]

Pull request overview

This PR updates the GenAI agent invocation telemetry to match the referenced semantic conventions change (semconv-genai PR #289) by removing gen_ai.provider.name from invoke_agent spans/metrics (notably for local/internal agent spans), and updating the repo’s semconv pin and validation rules accordingly.

Changes:

• Bump the pinned semantic-conventions-genai ref to a newer commit.
• Update opentelemetry-util-genai agent invocation APIs/attributes/tests to stop setting gen_ai.provider.name for invoke_agent.
• Adjust span validation policy to treat invoke_agent expectations as span-kind-dependent (internal vs client), and update LangChain instrumentation/tests to match the new handler signature.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
versions.env	Updates the pinned semconv-genai commit SHA.
util/opentelemetry-util-genai/src/opentelemetry/util/genai/handler.py	Removes provider from agent invocation factory APIs.
util/opentelemetry-util-genai/src/opentelemetry/util/genai/_agent_invocation.py	Stops emitting gen_ai.provider.name for agent invocations (spans + metrics).
util/opentelemetry-util-genai/tests/test_handler_agent.py	Updates expectations and call sites for agent spans/metrics without provider.
util/opentelemetry-util-genai/tests/test_handler_completion_hook.py	Updates agent hook tests for the new handler call pattern.
policies/genai_span_validation.rego	Updates required attributes for invoke_agent based on span kind (internal vs client).
instrumentation/opentelemetry-instrumentation-genai-langchain/src/opentelemetry/instrumentation/genai/langchain/callback_handler.py	Removes provider when starting local agent spans.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/test_callback_handler.py	Updates assertions for the adjusted handler call signature.

[lmolkova]

This is not used by anything that's been released