Lemon8 logo displayed on a phone screen and TikTok icon displayed on a screen in the background are seen in this illustration photo taken in Krakow, Poland, on March 30, 2023. Photo by Jakub Porzycki/NurPhoto via Getty ImagesTikTok's sister app Lemon8 has been sponsoring posts on TikTok encouraging users to migrate to Lemon8 amid a looming ban threat, according to sponsored posts viewed by Axios. Why it matters: The TikTok ban law also applies to other apps owned by TikTok's Chinese parent ByteD...