[eval]: disable MCP for SWE-Bench evaluation (#8574)

Co-authored-by: openhands <openhands@all-hands.dev>
Co-authored-by: Engel Nyst <enyst@users.noreply.github.com>
Co-authored-by: Engel Nyst <engel.nyst@gmail.com>

tests/unit/test_agent_session.py

@@ -35,6 +35,7 @@ def mock_agent():
 
     # Configure the agent config
     agent_config.disabled_microagents = []
+    agent_config.enable_mcp = True
 
     # Set up the chain of mocks
     llm.metrics = metrics