MONTREAL — T.J. Oshie scored the 300th goal of his career, while Aliaksei Protas and Anthony Mantha each had a goal and an assist as Washington delivered with a 4-3 victory over the Montreal Canadiens on Saturday night. “There’s not a point out there that we don’t need right now.” Nick Suzuki, Arber Xhekaj and Alex Newhook scored while Jake …