This test verifies that the fix in _handle_agent_response_and_continue()
correctly rebuilds the AgentResponse model with both endpoints and skill IDs
for subsequent turns in multi-turn A2A conversations.
The test simulates a multi-turn scenario where:
1. First turn: LLM returns skill ID 'Research'
2. Second turn: LLM returns skill ID 'Writing' (different agent)
3. Third turn: LLM returns skill ID 'Research' again
All turns should accept skill IDs without validation errors.
Co-Authored-By: João <joao@crewai.com>
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