TOKYO — A Japanese court on Wednesday ordered the governor of Okinawa to approve the central government’s modified plan for landfill work at the planned relocation site of a key U.S. military base on the southern island despite persistent opposition and protests by residents. The decision will move forward the suspended construction at a time Okinawa’s strategic importance is becoming key for the Japan-U.S. military alliance in the face of growing tensions with China. Japan also rapidly seeks