The ongoing concerns about TikTok’s use of U.S. user data and its potential threat to national security were at the center of a Senate hearing Wednesday. TikTok says it’s not committed to stopping flows of U.S. user data to China as the company’s chief operating officer testified that the social media company would work with the federal government to ease concerns about national security, CNN reported Wednesday. RELATED: Trump signs executive order banning TikTok and WeChat ‘transactions’ in 45 days Chief Operating Officer Vanessa Pappas explained during her testimony before the Senate Homeland Security Committee Wednesday that the social media…