Make sure SelectedRow/SelectedRows changes are always notificated to DatagridRow

[David-Moreira]

Make sure SelectedRow/SelectedRows changes are always notificated to DatagridRow by re-setting them up as parameters.

I think there was one more issue related to this but I can't seem to find it now.
Closes #3386

Code used for testing:
(Basically select rows, then mutate the SelectedRows... see if it propagates successfully.)

<DataGrid 
@ref="dataGridRef"
            TItem="string" Data="@dataList" Narrow="true" FixedHeader="true" Virtualize="false"
          VirtualizeOptions="@(new Blazorise.DataGrid.Configuration.VirtualizeOptions() { DataGridHeight="calc(-8px + 70vh) !important", DataGridMaxHeight="calc(-8px + 70vh) !important" })"
          Striped="true" Bordered="true" Filterable="true" Sortable="false" SelectionMode="DataGridSelectionMode.Multiple"
          Responsive="true"
          SelectedRows="@myList"
          SelectedRowsChanged="@AddOrRemoveMyList">
    <DataGridColumn TItem="string" Caption="No">
        <DisplayTemplate>
            @context
        </DisplayTemplate>
    </DataGridColumn>
</DataGrid>
<Button Color="Color.Danger" Clicked="@ResetSelection">Reset</Button>
@String.Join(',' , myList)
@code {
    private DataGrid<string> dataGridRef;
    private List<string> dataList = new List<string>() { "a", "b", "c", "d", "e", "f" };
    private List<string> myList = new List<string>();

    private void AddOrRemoveMyList(List<string> someList)
    {
        myList = someList;
        StateHasChanged();
    }

    private void ResetSelection()
    {
        myList = new List<string>();
        //myList.Clear();
        StateHasChanged();
    }
}