Israeli appeal court on Wednesday overruled a magistrate who had stirred Palestinian anger by questioning the legality of barring Jewish prayer at a contested Jerusalem shrine, as the United States warned its citizens over travel in the vicinity. Al Aqsa mosque compound, which Jews revere as a vestige of their two ancient temples, is in Jerusalem’s Old City and at the heart of the Israeli-Palestinian conflict. Under a decades-old “status quo” arrangement with Muslim authorities, Israel allows Jews to visit on condition they refrain from religious rites. Three Jewish youths who received a restraining order after praying at the site...