Since TikTok ’s top executive in the US faced a flurry of questions about the short video app’s links to China and the Communist Party during a Senate hearing on Wednesday, the platform’s Beijing-based owner ByteDance has remained silent on the issue. TikTok, the most successful app in overseas markets owned by a Chinese company, is facing a wave of scrutiny in the US over concerns that user data could be accessed by employees in China and possibly handed over to the government. TikTok has made repeated assurances that it has never given data to the Chinese government, which chief…