Shares of app makers rallied, with Spotify Technology SPOT.N, Activision Blizzard ATVI.O and Electronic Arts EA.O all gaining. By Noel Randewich Sept 10 (Reuters) - Wall Street ended lower on Friday as investors weighed signs of higher inflation, while Apple Inc AAPL.O tumbled following an unfavorable court ruling related to its app store. U.S. producer prices rose solidly in August, leading to the biggest annual gain in nearly 11 years and indicating that high inflation was likely to persist as the pandemic pressures supply chains, data showed.