Merge branch 'krille/send-sticker-without-waiting' into 'main'

fix: Send sticker without blocking the UI

See merge request famedly/fluffychat!889

lib/pages/chat/chat.dart

@@ -392,12 +392,9 @@ class ChatController extends State<Chat> {
       'url': sticker.url.toString(),
     };
     // send the sticker
-    await showFutureLoadingDialog(
+    await room!.sendEvent(
-      context: context,
+      eventContent,
-      future: () => room!.sendEvent(
+      type: EventTypes.Sticker,
-        eventContent,
-        type: EventTypes.Sticker,
-      ),
     );
   }