Document difference between Agent and Agent 2 in active check handling after start

Steps to reproduce:
Create Agent 2 check with 1 h update interval (no matter the value, just not frequently checked), reboot the server, get no data, for example, about uptime change.

If item collected with 1m or 5m - you will get updated values, but with less frequent updates you will get "blind" for the update interval of the item if Agent restarted.

Result:
Documentation has no information about difference with Agent 1:
https://www.zabbix.com/documentation/current/en/manual/concepts/agent2

Expected:
Difference should be mentioned in the documentation.