By Alys Denby As Keir Starmer faces questions over a £5,000 donation towards his wife’s wardrobe, the Prime Minister is finding out that decency in public life isn’t an automatic function of not being a Tory, writes Alys Denby When Victoria Starmer entered Downing Street for the first time wearing a Me+Em dress in Labour rose red, the media lost its mind. She was praised for her “leadership”, for “giving a masterclass in diplomatic dressing” and for displaying “London cool even in classic mode” (what?). Even the price of the outfit – £275 – was fawned over as the “sweet spot” of the fashion in…