A US appeal court on Monday allowed thousands of lawsuits to move forward against Meta Platforms, Alphabet’s Google, ByteDance’s TikTok, and other social media companies over claims they designed their products to be addictive to young users.The San Francisco-based 9th US Circuit Court of Appeals rejected the companies’ bid to reverse a lower court’s ruling forcing them to face some 2,400 lawsuits over the claims filed in federal court.The companies, which also include Snap Inc’s Snapchat,...