⚡️(frontend) lower silent login retry interval from 5 min to 30 sec

This change enhances user experience by making automatic login more responsive.
Only occurs on app navigation/refresh, not internal navigation.

Testing in production, can revert if needed. Will later refactor to use
backend configuration.

src/frontend/src/features/auth/api/fetchUser.ts

@@ -26,7 +26,7 @@ export const fetchUser = (
           // make sure to not resolve the promise while trying to silent login
           // so that consumers of fetchUser don't think the work already ended
           if (opts.attemptSilent && canAttemptSilentLogin()) {
-            attemptSilentLogin(300)
+            attemptSilentLogin(30)
           } else {
             resolve(false)
           }