By Colette Bennett Get ready to spend even more time on TikTok. While you go to TikTok to watch trending dance challenges or enjoy the comforts of your favorite niche of the social media site, the company wants to give you another reason to spend even more time there. Despite being the fastest-growing property in the social-media sphere — a billion monthly users and counting as of 2021 — the Chinese-owned site understands that it has to continually innovate to remain relevant. This challenge has also plagued long-reigning social-media giant Twitter (TWTR) – Get Twitter, Inc. Report, which ad…