fix: Fix crashes and enhance test reliability with session IDs (#6683)

* test: Add session ID parameter to ToolCallingAgentComponent test

* test: Add blocking for langchain_core runnables utility function

* test: Add session ID generation to agent component test

* fix: Safely delete agent message with ID check

Modify error handling in LCAgentComponent to only delete agent message if it has an ID attribute, preventing potential attribute errors

* test: Update ComponentToolkit test to use async start and verify results

Modify the test_component_tool_with_api_key test to:
- Use async_start() method for graph execution
- Add session ID to graph
- Improve result verification with vertex result tracking
- Update import path for ChatOutput component

* test: Skip cycle tests requiring LoopComponent

Update test_cycles.py to:
- Add skip markers for tests that now require a LoopComponent
- Improve error message with snapshots for debugging
- Preserve existing test logic while marking as skipped

* test: Add client fixture to tool calling agent test

Add usefixtures decorator to ensure client is available for the tool calling agent test, improving test setup and reliability

* test: Add client fixture to component tool test with API key

Enhance test_component_toolkit.py by adding the client fixture to the test_component_tool_with_api_key method, ensuring proper test setup for API key-dependent scenarios

* test: Add client fixture to agent component test with calculator

Add client fixture to the test_agent_component_with_calculator method to ensure proper test setup for API key-dependent scenarios

* test: Disable redundant component input tests

Remove commented-out test methods for checking required inputs across various components, as these tests were not providing significant value and the inputs are dynamic

* test: Comment out condition to skip nodes with Tool outputs in setup.py

* run formatter

* test: Re-enable condition to skip nodes with Tool outputs in setup.py

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/backend/tests/unit/components/agents/test_agent_component.py

@@ -95,6 +95,7 @@ class TestAgentComponent(ComponentTestBaseWithoutClient):
         assert "model_name" not in updated_config
 
 
+@pytest.mark.usefixtures("client")
 @pytest.mark.api_key_required
 async def test_agent_component_with_calculator():
     # Mock inputs