💄 Optimize file upload prograss indicates

lib/screens/chat/room.dart

@@ -149,7 +149,7 @@ class ChatRoomScreen extends HookConsumerWidget {
     final messageForwardingTo = useState<SnChatMessage?>(null);
     final messageEditingTo = useState<SnChatMessage?>(null);
     final attachments = useState<List<UniversalFile>>([]);
-    final attachmentProgress = useState<Map<String, Map<int, double>>>({});
+    final attachmentProgress = useState<Map<String, Map<int, double?>>>({});
 
     // Selection mode state
     final isSelectionMode = useState<bool>(false);
@@ -571,7 +571,7 @@ class ChatRoomScreen extends HookConsumerWidget {
               onProgress: (progress, _) {
                 attachmentProgress.value = {
                   ...attachmentProgress.value,
-                  'chat-upload': {index: progress},
+                  'chat-upload': {index: progress ?? 0.0},
                 };
               },
             ).future;

lib/screens/posts/compose_article.dart

@@ -306,7 +306,7 @@ class ArticleComposeScreen extends HookConsumerWidget {
                         ],
                       ),
                       children: [
-                        ValueListenableBuilder<Map<int, double>>(
+                        ValueListenableBuilder<Map<int, double?>>(
                           valueListenable: state.attachmentProgress,
                           builder: (context, progressMap, _) {
                             return Wrap(