1 hour ago Alex Forsyth Political correspondent Getty Images There can be moments of high jeopardy in Parliament when Westminster holds its breath to await the outcome of a crucial debate that could determine a government's future. In the end this didn't feel like one of them, but that doesn't mean Sir Keir Starmer has escaped unscathed. Ultimately he won the vote pretty comfortably with a clear majority of MPs rejecting the idea that he should be referred to a parliamentary committee for investigation over his statements about Lord Mandelson's appointment as US ambassador. But beyond the headline win, this was not a victorious moment. No 10 expended considerable political capital in keeping its troops onside.…