[BUG] xgboost 1.7: ImportError: cannot import name 'rabit' from 'xgboost'

[fyrestone]

Describe the bug A clear and concise description of what the bug is.

ctx = {'d115db169882b5c06d671c887024b11f_0': (array([[0.83104541, 0.80554386, 0.3985519 , ..., 0.72182508, 0.77294997,
     ...f43806cf2fd20aef4b6e34fc0468be5d_0': [b'DMLC_NUM_WORKER=1', b'DMLC_TRACKER_URI=127.0.0.1', b'DMLC_TRACKER_PORT=32911']}
op = XGBTrain <key=d2d29ee95452257a278991ec8bb47865>

    @classmethod
    def execute(cls, ctx, op: "XGBTrain"):
        if op.merge:
            return super().execute(ctx, op)
    
>       from xgboost import train, rabit
E       ImportError: cannot import name 'rabit' from 'xgboost' (/home/vsts/miniconda/envs/test/lib/python3.9/site-packages/xgboost/__init__.py)

mars/learn/contrib/xgboost/train.py:167: ImportError

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1. Your Python version
2. The version of Mars you use
3. Versions of crucial packages, such as numpy, scipy and pandas
4. Full stack of the error.
5. Minimized code to reproduce the error.

Expected behavior A clear and concise description of what you expected to happen.

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