By Jorgelina do Rosario, Rodrigo Campos and Karin Strohecker LONDON/NEW YORK (Reuters) – Ukraine’s overseas creditors have backed its request for a two-year freeze on payments on almost $20 billion in international bonds, a regulatory filing showed on Wednesday, a move that will allow the war-ravaged country to avoid a messy debt default. With no sign of peace or a ceasefire on the horizon nearly six months after Russia’s invasion began, holders of around 75% of the outstanding total agreed to Kyiv’s proposal, documents showed. “Ukraine will save almost $6 billion on payments,” said Prime Mini…