LONDON—Business growth across Europe remained strong last month but elevated inflationary pressures put a dent in demand while ongoing supply issues constrained activity, issues which are likely to continue, a survey showed on Tuesday. Although many restrictions imposed to contain the coronavirus pandemic have now been lifted in the region, firms are suffering from shortages of staff, raw materials, and transport. HIS Markit’s final composite Purchasing Managers’ Index (PMI), seen as a good guide to economic health, sank to 56.2 last month from August’s 59.0, although still well above the 50 mark separating growth from contraction and just above a 56.1 “flash” estimate. On Friday, a euro zone manufacturing PMI showed growth remained robust in September but activity suffered from supply chain bottlenecks, and the bloc’s dominant service industry also saw the pace of expansion slow. A PMI for the services sector fell to 56.4 from 59.0, its lowest since …