Dino-Ray Ramos Associate Editor/ReporterNBC launched the 19th season of The Voice on Monday, and though it stumbled in numbers compared with last fall’s debut, its 1.2 rating in the adults 18-49 demographic and 7.96 million viewers both topped the night in primetime in Nielsen Live+7 data.The reality singing competition’s debut, which did rise from its previous season finale numbers in May, was off two tenths from its previous cycle’s premiere episode in February, and down five tenths from its