refactor(tests): Add strict type hints to final batch of test files

tests/test_sim_execution.py

@@ -8,7 +8,7 @@ sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
 
 from simulation.sim_execution import ExecutionSimulation
 
-def test_execution_simulation_run():
+def test_execution_simulation_run() -> None:
  mock_client = MagicMock()
  mock_client.wait_for_server.return_value = True
  # Mock show_confirm_modal state