Mujoco 3.3.6 is breaking dm_control

Installing dm_control from pypi makes it unusable:
```
$ suite.load("cheetah", "run")
...
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/suite/cheetah.py", line 45, in run
physics = Physics.from_xml_string(*get_model_and_assets())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/mujoco/engine.py", line 444, in from_xml_string
return cls.from_model(model)
^^^^^^^^^^^^^^^^^^^^^
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/mujoco/engine.py", line 427, in from_model
return cls(data)
^^^^^^^^^
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/mujoco/engine.py", line 123, in __init__
self._reload_from_data(data)
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/mujoco/engine.py", line 408, in _reload_from_data
data=index.struct_indexer(self.data, 'mjdata', axis_indexers),)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/vmoens/venv/rl/lib/python3.11/site-packages/dm_control/mujoco/index.py", line 628, in struct_indexer
attr = getattr(struct, field_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'MjData' object has no attribute 'B_colind'
```

使用 PyPI 软件包通过 suite.load("cheetah", "run") 重现该故障，然后检查 dm_control/mujoco/index.py 中 struct_indexer 附近的代码，以及 dm_control/mujoco/engine.py 中 _reload_from_data 附近的代码。完成标准是：使用 MuJoCo 3.3.6 时，cheetah 运行不再引发 MjData B_colind AttributeError。

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