LONDON (Reuters) -British Prime Minister Rishi Sunak has pulled out of attending the COP27 climate summit which begins in Egypt next month to focus on domestic issues, his office said on Thursday. Sunak became prime minister on Monday, and has delayed an autumn fiscal statement to Nov. 17 as he looks to tackle a cost-of-living crisis and restore credibility damaged in the short tenure of his predecessor Liz Truss. “The Prime Minister is not expected to attend the summit in Egypt due to other pressing domestic commitments, including preparations for the autumn statement,” a Downing Street spoke…