fix: set the cancellation token when discord disconnects

src/main.rs

@@ -467,7 +467,7 @@ async fn handle_events(command_router: Arc<CommandRouter>, state: State, mut sha
         match event_res {
             Ok(twilight_model::gateway::event::Event::GatewayClose(frame_option)) => {
                 tracing::warn!(?frame_option);
-                return;
+                break;
             }
             Ok(event) => {
                 handle_event(command_router.clone(), state.clone(), event).await;
@@ -479,13 +479,15 @@ async fn handle_events(command_router: Arc<CommandRouter>, state: State, mut sha
                 ) =>
             {
                 tracing::error!(?reconnect_error);
-                return;
+                break;
             }
             Err(error) => {
                 tracing::error!(?error);
             }
         }
     }
+
+    state.cancellation_token.cancel();
 }
 
 #[tracing::instrument(skip(command_router, state))]