Merged in fix/LOY-511-handle-undefined-case (pull request #3377)

fix(LOY-511): handle undefined case

* fix(LOY-511): handle undefined case

* chore(LOY-511): add comment


Approved-by: Christel Westerberg

apps/scandic-web/components/Blocks/DynamicContent/Stays/Previous/L6Progress/index.tsx

@@ -30,7 +30,8 @@ export async function L6Progress() {
 
   const nightsToTopTier = user?.membership?.nightsToTopTier
 
-  if (nightsToTopTier == null) {
+  // A simple falsy check won't work here as we want to pass through 0.
+  if (nightsToTopTier === null || nightsToTopTier === undefined) {
     return null
   }