By Robyn Scott From bad pick up lines from sustainable fashion founders to fossil fuel firms, Cop28 has become the summit to be seen, writes Robyn Scott Here at Cop28 in Dubai, I attended a “nightcap” hosted by two of the world’s largest corporations – just one of dozens of networking parties across the city’s gleaming hotels and swanky nightclubs taking place as part of the climate conference. The event was packed. “Nice dress,” someone said as I edged sideways through the crowd. After this unsubtle pick up line, he proceeded to describe his large sustainable fashion business, though he seeme…