fix(im): 修复addGroupMember时memberName因@JsonIgnore在Feign传输中丢失

移除MemberListDTO.memberName上的@JsonIgnore注解，确保名称能通过Feign跨服务传输。
改为在发送腾讯IM API前手动移除memberName字段，避免发送IM不接受的字段。

Co-Authored-By: Claude <noreply@anthropic.com>

health-im/health-im-biz/src/main/java/com/renkang/im/util/TencentCloudImUtil.java

@@ -548,9 +548,13 @@ public class TencentCloudImUtil {
             String httpsUrl = getHttpsUrl(TencentCloudImApiConstant.GroupManage.ADD_GROUP_MEMBER, random);
             String jsonString = objectMapper.writeValueAsString(dto);
             JSONObject jsonObject = JSONObject.parseObject(jsonString);
-//        JSONObject jsonObject = new JSONObject();
-//        jsonObject.put("GroupId", dto.getGroupId());
-//        jsonObject.put("MemberList", dto.getMemberList());
+            // 移除 memberName 字段，腾讯IM API 不接受此字段
+            JSONArray memberList = jsonObject.getJSONArray("MemberList");
+            if (memberList != null) {
+                for (int i = 0; i < memberList.size(); i++) {
+                    memberList.getJSONObject(i).remove("memberName");
+                }
+            }
             log.info("腾讯云im添加群成员，请求参数：{}", jsonObject);
             String result = HttpUtil.doPost(httpsUrl, jsonObject);
             log.info("腾讯云im添加群成员，返回结果：{}", result);