fix: 修复在一些奇怪情况下会出现undefined的问题

client/shared/redux/hooks/useConverseMessage.ts

@@ -34,7 +34,7 @@ function useHandleSendMessage(context: ConverseContext) {
    */
   const handleSendMessage = useCallback(
     async (payload: SendMessagePayload) => {
-      payload.content = payload.content.trim();
+      payload.content = String(payload.content).trim();
       // 输入合法性检测
       if (payload.content === '') {
         showErrorToasts(t('无法发送空消息'));