Merge branch '31734-update-icon-utils-catch-to-fail' into 'master'

Update catch in icon_utils to reject

See merge request gitlab-org/gitlab!27414

app/assets/javascripts/lib/utils/icon_utils.js

@@ -9,8 +9,10 @@ const getSvgDom = memoize(() =>
   axios
     .get(gon.sprite_icons)
     .then(({ data: svgs }) => new DOMParser().parseFromString(svgs, 'text/xml'))
-    .catch(() => {
+    .catch(e => {
       getSvgDom.cache.clear();
+
+      throw e;
     }),
 );