Extend ASYNC401 to other forms #475

I was looking at implementing ASYNC401 in Ruff and noticed that there are a couple forms that the rule here doesn't capture but arguably should.

• pytest.mark.xfail(raises=ExceptionGroup) could be pytest.mark.xfail(raises=pytest.RaisesGroup(...))
• pytest.RaisesGroup(ExceptionGroup) could be pytest.RaisesGroup(pytest.RaisesGroup(...))
• pytest.raises(ExceptionGroup[Exception]) and pytest.RaisesExc(ExceptionGroup) are ignored even though they are equivalent to pytest.raises(ExceptionGroup)

Would there be interest in updating the rule to report on the usages above as well?