[Refactor] As per MR, don't mutate items

Gestion/src/views/ApplicationsView.vue

@@ -234,8 +234,7 @@ export default {
 
       const compareFunctionReversed = function(a, b) { return - compareFunction(a, b); };
 
-      items.sort(descending ? compareFunction : compareFunctionReversed);
-      return items;
+      return [...items].sort(descending ? compareFunction : compareFunctionReversed);
     },
   },
   components: {