LONDON (Reuters) – H&M said on Friday soaring costs had slashed its profits, the latest fast-fashion retailer to feel the pinch as consumers cut back, while LVMH and Salvatore Ferragamo revealed the damage to luxury sales caused by China’s COVID-19 policies. Shares in H&M, the world’s No. 2 fashion retailer, fell as much as 6% in early trade after quarterly operating profit sank to 821 million Swedish crowns ($79.7 million) from 6.26 billion a year earlier. That was well below a mean forecast of 3.67 billion crowns in a Refinitiv poll of analysts. The results highlighted the challenge for fash…