The central figure in the corruption scandal shaking Ukraine, Tymur Mindich, is an old friend and former business partner of President Volodymyr Zelenskyy.Law enforcement sources say Mindich left the country shortly before police searched his home.And prosecutors have reportedly told a court they have a recording of a call in which Zelenskyy is heard speaking to another target of the probe, Justice Minister Herman Halushchenko, while Halushchenko was on a group call with Mindich and Oleksandr Tsukerman, an associate who is also charged and also…