Fix problems in msr_sqa
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['It shows below when I run test:\r\n\r\nFAILED tests/test_dataset_common.py::LocalDatasetTest::test_load_dataset_all_configs_msr_sqa - ValueError: Unknown split "validation". Should be one of [\'train\', \'test\'].\r\n\r\nIt make no sense for me😂. \r\n'
 '@albertvillanova Does this PR has some additional fixes compared to https://github.com/huggingface/datasets/pull/3771 or we can close it?'
 '@mariosasko besides the fix of the DuplicatedKeysError, this PR:\r\n- changes the reading of one of the files: use pandas instead of splitting by comma\r\n- changes the splits: modifying train and adding validation\r\n- adds some extra logic in the processing of the data: adding a new field "question_and_history"\r\n\r\nWe should decide whether validating these additional changes.\r\n- for example, if we accept as pertinent the addition of the field "question_and_history", this should be added as feature to the info, and the matadata should be regenerated...'
 'Hi guys, anything we can do to fix that bug👀? @mariosasko @albertvillanova @lhoestq ']
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The last version has many problems,

1) Errors in table load-in. Split by a single comma instead of using pandas is wrong.
2) id reduplicated in _generate_examples function.
3) Missing information of history questions which make it hard to use.

I fix it refer to https://github.com/HKUNLP/UnifiedSKG. And we test it to perform normally.
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