fix 员工支持客服身份

cooleshow-user/user-biz/src/main/java/com/yonge/cooleshow/biz/dal/service/impl/ImGroupServiceImpl.java

@@ -95,6 +95,7 @@ import java.text.MessageFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Base64;
 import java.util.Collections;
 import java.util.Comparator;