ENGCOM-6273: Fix escape less calc #25552

 - Merge Pull Request #25552 from mediact/magento2:feature/less-calc-escape-fix
 - Merged commits:
   1. e0a0d50

Author: magento-engcom-team

lib/web/css/source/lib/_navigation.less

@@ -338,7 +338,7 @@
                     top: 0;
                     left: 100%;
                     width: 10px;
-                    height: calc(100% + 3px);
+                    height: calc(~'100% + 3px');
                     z-index: 1;
                 }
             }