Don't wait for an interval for the first poll of subscription

Author: SpriteOvO

src/task/subscription.rs

@@ -36,6 +36,7 @@ impl TaskSubscription {
     async fn continuous_fetch(&mut self, fetcher: Box<dyn FetcherTrait>) {
         let mut interval = tokio::time::interval(self.interval);
         interval.set_missed_tick_behavior(MissedTickBehavior::Delay);
+        interval.reset_immediately();
 
         let mut last_status = Status::empty();