Netflix didn’t just mark 10 years in South Africa with a slate reveal. The global streamer took over the Divine Sunset venue in Midrand on Thursday for the hottest party Johannesburg has seen all year. The brief for guests was fittingly ambitious: “Tomorrow’s Black Tie. The future has a dress code.” A day earlier, the streamer unveiled its next wave of local stories at a press showcase in Rosebank, celebrating a decade that’s supported more than…