行合并自动分组和缺陷

使用setRowGroupDef方法来手动设置行分组，并将enableRowGroup设置为true，而不是在autoGroupColumnDef中设置

代码示例：

gridOptions: { enableRowGroup: true, columnDefs: [ { headerName: 'Country', field: 'country', rowGroup: true }, { headerName: 'Year', field: 'year', rowGroup: true }, { headerName: 'Sport', field: 'sport' }, { headerName: 'Total Medals', field: 'totalMedals' } ], onGridReady: function(params) { params.api.setRowGroupDef([ { field: 'country', rowGroupIndex: 0 }, { field: 'year', rowGroupIndex: 1 } ]); } }