Tech mogul Elon Musk was a surprise guest on a phone call between President-elect Donald Trump and Ukrainian President Volodymyr Zelenskyy shortly after Trump emerged as the winner of the presidential race. The call, described as “positive and cordial,” took place as Trump navigated the transition period toward his second term, according to CNN. Musk was present at Mar-a-Lago, Trump’s private estate in Palm Beach, Florida, when Zelenskyy reached out to offer his congratulations on Trump’s victory, the report read. The brief conversation was seen as an informal yet notable moment during the pre…