I spent 7 years working as a cashier at a fast-food establishment in Southeast Los Angeles before DACA allowed for other options. The same mechanical monster taunts the staff at the Grill, the fictional Times Square restaurant at the center of Mexican writer-director Alonso Ruizpalacios’ “La Cocina,” a black-and-white reimagining of British author Arnold Wesker’s 1957 play “The Kitchen.” Almost …