Ignore congrats fetch errors

The congrats page fetches data once a minute, and onRefreshTimer()
reloads the page once every 10 minutes. If a data fetch is in flight
when the page reload happens, it can cause a 'failed to fetch' error
to occur.

Closes #2895

ts/congrats/index.ts

@@ -26,8 +26,12 @@ export async function setupCongrats(): Promise<CongratsPage> {
     // refresh automatically if a custom area not provided
     if (!customMountPoint) {
         setInterval(async () => {
-            const info = await congratsInfo({});
-            page.$set({ info });
+            try {
+                const info = await congratsInfo({});
+                page.$set({ info });
+            } catch {
+                console.log("congrats fetch failed");
+            }
         }, 60000);
     }