ZURICH—Swiss chocolate maker Lindt & Spruengli expects sales of its upmarket chocolates to grow less in 2022 than last year, it said on Tuesday, and blamed supply chain bottlenecks for a slowdown in late 2021 in North America. The maker of the best-selling Lindor chocolate balls, which has maintained spending on advertising and new products throughout the COVID-19 pandemic, said market share gains boosted organic sales by 13.3 percent last year. Lindt, along with other chocolate makers, saw a dip in demand in 2020, but sales recovered strongly in 2021 as people ate more treats and bought gifts for friends and relatives they had been unable to see at the height of the pandemic. Major European markets as well as the online business recorded double-digit growth, but North America slowed to 10.7 percent in the full year, from 18.8 percent in the first half, Lindt said. The slowdown “was partly …