ByteDance , owner of the hit short video app TikTok , has quietly launched a new search engine that promises no advertisements in a cyberspace where Google has not been available for more than a decade. Without any announcement, ByteDance subsidiary Beijing Infinite Dimension Technology launched the Wukong search app this month, within days of Tencent Holdings shutting down on August 8 its Sogou search app. Sogou, which Tencent bought last year , still maintains its web-based search engine. Wukong, currently available on Apple’s App Store in China and various Chinese Android app stores, brings ByteDance into closer competition with…