DUBLIN (Reuters) – Irish consumer sentiment improved slightly in June after a rare four months of declines, a survey showed on Thursday, but the authors said it was unclear if the increase was likely to be sustained. The KBC Bank Ireland consumer sentiment index climbed to 57.7 in June from 55.5 in May. The June figure matched the level registered in April but remained far short of the 2022 high of 81.9 hit in January and the series average of 86.4. “At current levels, sentiment is awful rather than apocalyptic, suggesting the Irish consumer is down but not entirely out,” KBC Ireland chief eco…