[nodejs] Clean up inputs/outputs for InvokeAgent spans based on new OTel format

[fpfp100]

Clean up inputs/outputs for InvokeAgent spans based on new OTel format

[Copilot]

Pull request overview

This pull request refactors the handling of input messages for InvokeAgent spans to align with a new OpenTelemetry format. Instead of storing the complete input structure and extracting attributes separately, the code now intelligently processes input arrays to extract user text content when available, falling back to the full array JSON when no user messages are present.

Key Changes:

• Introduced a new buildInputMessages method that extracts text content from user role messages or returns the full array
• Removed the previous logic that called Utils.getAttributesFromInput and set additional attributes from input
• Added comprehensive test coverage for both extraction scenarios (user messages present and assistant-only messages)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
packages/agents-a365-observability-extensions-openai/src/OpenAIAgentsTraceProcessor.ts	Implements new buildInputMessages method to extract user text content from input arrays, replacing previous attribute extraction logic
tests/observability/extension/openai/OpenAIAgentsTraceProcessor.test.ts	Adds two test cases validating the new input message processing behavior for both user and assistant-only scenarios

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[Copilot]

There is trailing whitespace after the comma on this line. Remove the extra spaces to maintain consistent formatting.

Suggested change

	_input: inputArray,
	_input: inputArray,

[Copilot]

This test case uses the same span name 'ResponseArray' as the test on line 592. This creates ambiguity in the test suite as both tests access spansByName['ResponseArray']. Use a unique name like 'ResponseArrayNonStandard' to distinguish this test case.

[nikhilNava]

Can you post the before and after for the input / output values?