By Nikolaj Skydsgaard BORNHOLM, Denmark (Reuters) – After decades of living in a comfortable welfare bubble and topping the world’s happiness index, Danes’ sense of safety has been shaken by geopolitical strife and economic uncertainty, a theme likely to impact how Danes vote next week. The prospect of energy shortages, rampant inflation and the war in Ukraine, which moved closer with last month’s sabotage of two pipelines carrying gas from Russia to Germany through Danish waters, has fuelled an unprecedented sense of insecurity among Danes. On Bornholm, an island in the Baltic Sea halfway bet…