[BUG]: change getColumns to be able to work with Relations with underscore DT

[romanstingler]

due to bugs

yajra/laravel-datatables#2324
yajra/laravel-datatables-html#123

due to code in
HasColumns.php

...
        foreach ($columns as $key => $value) {
            if (!is_a($value, Column::class)) {
                if (is_array($value)) {
                    $attributes = array_merge(
                        [
                            'name' => $value['name'] ?? $value['data'] ?? $key,
                            'data' => $value['data'] ?? $key,
                        ],
                        $this->setTitle($key, $value)
                    );
                } 
...

the default template doesn't work

protected function getColumns()
{
        return [
           'jobState.name'
        ];
}

the working solution is to change the returned array and the working function looks like

    protected function getColumns()
    {
        return [
            'jobState.name' => ['data' => 'job_state.name', 'name' => 'jobState.name'],
        ];
    }

so the key is used for the title due to this line
$this->setTitle($key, $value)