chore: Enable eslint to enforce curly (#3060)

app/index.tsx

@@ -87,7 +87,9 @@ if (element) {
 window.addEventListener("load", async () => {
   // installation does not use Google Analytics, or tracking is blocked on client
   // no point loading the rest of the analytics bundles
-  if (!env.GOOGLE_ANALYTICS_ID || !window.ga) return;
+  if (!env.GOOGLE_ANALYTICS_ID || !window.ga) {
+    return;
+  }
   // https://github.com/googleanalytics/autotrack/issues/137#issuecomment-305890099
   await import(
     /* webpackChunkName: "autotrack" */