feat: (REQ-3457) IM人员选择器-更新历史聊天update_at

im-center-server/src/main/java/cn/axzo/im/service/impl/ChatUserHistoryServiceImpl.java

@@ -19,6 +19,7 @@ import org.springframework.cloud.context.config.annotation.RefreshScope;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
 
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -93,6 +94,7 @@ public class ChatUserHistoryServiceImpl  extends ServiceImpl<ChatUserHistoryMapp
             Long id = imAccountMap.get(this.buildChatHistoryKey(history));
             if (Objects.nonNull(id)) {
                 history.setId(id);
+                history.setUpdateAt(new Date());
             }
         }
         return historyList;