By Krisztina Than and Gergely Szakacs BUDAPEST (Reuters) -Emboldened by a fourth consecutive landslide election victory, Hungarian Prime Minister Viktor Orban is expected to dig in against energy sanctions on Russia and toughen his stance in talks with Brussels to unlock frozen EU funds. Nationalist Orban, who held on to his sweeping majority on Sunday, crushing the opposition despite efforts to unite against him, will likely continue to reject any EU sanctions on Russian oil and gas, arguing they would wreck an economy already slowing due to the impacts of the Ukraine war. Using his strong ma…