LONDON — A British court ruled Tuesday that WikiLeaks founder Julian Assange will not be extradited immediately to the United States to face hacking and espionage charges and that U.S. officials must first provide assurances to British authorities that he would be able to rely on free speech protections and not incur the death penalty in a U.S. trial.The U.K. High Court in London gave U.S. officials three weeks to provide the assurances and said Assange would be able to appeal his extradition if those promises were not forthcoming. A decision on whether Assange will be granted a full…