TORONTO — In the halls of Parliament, TikTok is banned from civil servants' phones as the government grapples with allegations of foreign interference. But on Canada's red carpets and in sports arenas, the popular social media platform is still welcome. The video-sharing app has served as the official voting platform for the Juno Awards' fan choice award, livestreamed the Osheaga music festival in Montreal and even emblazoned its logo across the helmets of Toronto Maple Leaf players for the last two seasons. It's in the spotlight right now as a media partner of the Toronto International Film Festival. Last year,...