Zabbix

..F....... [ZBX-26120] fixed data loss warning on opening the trigger form after closing the mass update pop-up

* commit '2879e763d53decb7f6dd565945e7268e738d03da':
  ..F....... [ZBX-26120] removed unused code
  ..F....... [ZBX-26120] reverted; added proposed unsubscribe catching "dialogue.close" event
  ..F....... [ZBX-26120] fixed changelog
  ..F....... [ZBX-26120] fixed data loss warning on opening the trigger form after closing the mass update pop-up

(cherry picked from commit 823db99c7c7afaf0e905401d6e8ad02825397e45)