London —  A CBS News investigation has found that the Grok AI tool on Elon Musk's X platform is still allowing users to digitally undress people without their consent.  The tool still worked Monday on both the standalone Grok app, and for verified X users in the U.K, the U.S. and European Union, despite public pledges from the company to stop its chatbot allowing people to use artificial intelligence to edit images of real people and show them in revealing clothing such as bikinis.  Scrutiny of