test: fix failing grpc agent otel tests

[santigimeno]

Make sure we take service.version into account once the fix for appVersion was introduced.
Make sure we use the common checkResource() function in the tracing test too.

Summary by CodeRabbit

• Tests

  • Refactored test validation to utilize centralized resource validation logic with enhanced configuration parameters.

• Chores

  • Extended telemetry attributes to include service version information in resource validation.

[coderabbitai]

Walkthrough

These changes refactor resource validation by consolidating a local checkResource function into a shared module and updating its signature to accept agent configuration. The shared function now validates an additional 'service.version' attribute derived from the agent's config.

Changes

Cohort / File(s)	Summary
Test update for shared resource validation test/agents/test-grpc-tracing.mjs	Removes local checkResource function, imports it from common module, and updates invocation to pass three arguments (resource, agentId, config). Retrieves agent config via new TestClient.config() method.
Shared resource validation enhancement test/common/nsolid-grpc-agent/index.js	Extends checkResource to validate 'service.version' attribute, sourced from config.appVersion.

Possibly related issues

• Fix flaky grpc agent otel tests #420: Addresses the shared checkResource consolidation by updating test invocations with the new three-argument signature and adding service.version validation in the shared module.

Poem

🐰 A rabbit hops through code so fine,
Sharing wisdom, test by test—
One checkResource, drawn in line,
With config whispers, manifest.
Version songs now softly rest,
In shared burrows, best and blessed! 🌿

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'test: fix failing grpc agent otel tests' clearly identifies the main change: fixing failing gRPC agent OpenTelemetry tests, which directly aligns with the PR objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch santi/fix_grpc_resource_tests

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