By Jessica Frank-Keyes Angela Rayner has slapped down the suggestion Labour could “flatten the whole green belt” to build homes. Politico’s London Playbook newsletter quoted an unnamed party official on Thursday, as saying: “I don’t care if we flatten the whole green belt, we just need more houses in this country.” Prime Minister Rishi Sunak posted the quote to his feed on X, formerly Twitter, with the caption: “Good to finally get Labour’s real views on Britain’s green belt.” But speaking to City A.M. Labour’s shadow housing secretary denied that the comment represented Labour’s plans – after…