By Andy Bruce and William Schomberg LONDON (Reuters) – Britain’s economy remained below its pre-pandemic peak, according to data published on Friday that left the country further adrift of other Group of Seven nations and underscored the challenge facing new Prime Minister Liz Truss. The Office for National Statistics said economic output unexpectedly rose by 0.2% in April through June, revised up from a previous reading of a 0.1% contraction, meaning the British economy has not yet fallen into a recession. But the ONS revised down its estimate for Britain’s recovery from the COVID-19 pandemic…