SINGAPORE (Reuters) -Japan's ruling coalition broke up on Friday, with junior partner Komeito rebelling against the Liberal Democratic Party's new hardline leader Sanae Takaichi in a move that cast doubt over her premiership bid. Market reaction was mixed as traders attempted to make sense of what the split meant for the political landscape and economic outlook. The yen, which was trading near an eight-month low, strengthened as much as 0.5% to 152.38 per dollar after the fracture of the 26-year politica ...