The sessionid length generated by ZABBIX session needs to be configurable

Steps to reproduce:

1. The sessionid length generated by ZABBIX sessionid is the result of MD5 encryption,It is a fixed value.We need its length configurable.
2. MD5 encryption script path:ui\incloud\classes\api\services\CUser.php

Result:
The length of sessionid can refer to phpsessid and write the length as a parameter.
Expected:
See the attached patch file for the document description.