fix(client): 修正 ChangeNotifier 监听生命周期

lib/pages/player/widgets/comment_composer_sheet.dart

@@ -79,6 +79,15 @@ class _CommentComposerSheetState extends State<CommentComposerSheet> {
     _trackKeyboardInset(_keyboardHeight(context));
   }
 
+  @override
+  void didUpdateWidget(covariant CommentComposerSheet oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.controller != widget.controller) {
+      oldWidget.controller.removeListener(_onControllerChanged);
+      widget.controller.addListener(_onControllerChanged);
+    }
+  }
+
   Future<void> _prepareInput() async {
     if (_isAndroid) {
       await _keyboardInset.start();