Summary

By introducing ZBXNEXT-10334 there is a need to improve users configuration screen in Zabbix as API might be enabled, but there will be no access due to empty allow list.

Steps to reproduce:

1. Create user role with enabled "Allow API" but with no API methods in allow/deny lists.
2. Navigate to user configuration screen
3. Observe Access to API is enabled, but there is no info about API methods being allowed/denied. 

Result:

Expected:
Add "Denied methods" None or "Allowed methods" None when Access to API is enabled with empty Allow/Deny lists.