By Anna Ringstrom, Essi Lehto and Supantha Mukherjee STOCKHOLM (Reuters) -Wage talks between Scandinavian airline SAS and its pilots collapsed on Monday, triggering a strike that puts the future of the carrier at risk and adds to travel chaos across Europe as the peak summer vacation period begins. The action is the first major airline strike to hit when the industry is seeking to capitalise on the first full rebound in leisure travel following the pandemic. It follows months of acrimony between employees and management as the airline seeks to recover from the impact of lockdowns without takin…