Assignment Progress now only renders when the subject has one or more assignments

app/subject/viewDetailsSubject.tsx

@@ -324,6 +324,7 @@ export default function ViewDetailsSubject() {
                 </View>
               </View>
 
+              {totalAssignments > 0 ? (
                 <View className="mt-5">
                   <View className="mb-2 flex-row items-center justify-between">
                     <Text className="text-sm font-semibold text-text-secondary">
@@ -353,6 +354,7 @@ export default function ViewDetailsSubject() {
                         } remaining`}
                   </Text>
                 </View>
+              ) : null}
 
               <Text className="mt-4 text-sm text-text-muted">
                 Last changed: {formatDateTime(subject.lastChanged)}