Zabbix

...G...... [ZBX-21310] fixed SSL_shutdown() error in zabbix_server.log when receiving active check heartbeat

Merge in ZBX/zabbix from feature/ZBX-21310-6.2 to release/6.2

* commit 'f8f6db9c5df27fa81746375db74086ab545b6594':
  ...G...... [ZBX-21310] fixed logging of agent heartbeat message sending failures/recoveries
  ...G...... [ZBX-21310] fixed SSL_shutdown() error in zabbix_server.log when receiving active check heartbeat
  ...G...... [ZBX-21310] fixed SSL_shutdown() error in zabbix_server.log when receiving active check heartbeat