Update app/(tabs)/profile.tsx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: digitalnomad91

app/(tabs)/profile.tsx

@@ -21,7 +21,7 @@ export default function ProfileScreen() {
     // Redirect to login if not authenticated (only after component is ready)
     useEffect(() => {
         if (isReady && !user) {
-            router.push('/login');
+            router.replace('/login');
         }
     }, [user, isReady]);