Former finance minister Rishi Sunak came out on top in the latest round of voting Thursday by Conservative MPs to decide Britain’s next prime minister, followed by bookmaker favourite Penny Mordaunt. Mordaunt earlier came under blistering attack after she surged in the race to succeedBoris Johnson, as another long-shot candidate for leader was eliminated. The little-known Mordaunt, a committed Brexiteer who was briefly Britain’s first woman defence secretary before she was demoted to less senior roles, has emerged as the darling of Tory grassroots members. In the second round of voting by Cons…