[Bug Report] make santy-test

[peizhiXu]

High Level Description

when make sanity-test, the error is:
[gw0] [ 14%] PASSED smarts/core/tests/test_python_version.py::test_python_version
[gw2] [ 28%] PASSED smarts/core/tests/test_dynamics_backend.py::test_set_pose
[gw5] [ 42%] FAILED examples/tests/test_examples.py::test_examples[e2_single_agent]
[gw1] [ 57%] PASSED smarts/core/tests/test_sumo_version.py::test_sumo_version
[gw4] [ 71%] PASSED smarts/core/tests/test_smarts.py::test_smarts_doesnt_leak_tasks_after_reset
[gw3] [ 85%] PASSED smarts/core/tests/test_sensors.py::test_waypoints_sensor
[gw6] [100%] PASSED smarts/env/tests/test_social_agent.py::test_social_agents_not_in_env_obs_keys

The specific is ：AttributeError: 'OrderEnforcing' object has no attribute 'agent_interfaces'

Version

master

Steps to reproduce the bug

System info

No response

Error logs and screenshots

No response

Impact (If known)

No response

[Irayshon]

smarts/env/gymnasium/wrappers/single_agent.py 39

agent_ids = list(env.unwrapped.agent_interfaces.keys()) # add .unwrapped

[YQ-097]

smarts/env/gymnasium/wrappers/single_agent.py 39

agent_ids = list(env.unwrapped.agent_interfaces.keys()) # add .unwrapped

Thank you, that works.