Zabbix

..F....... [ZBX-25509] removed functionality for disabling options in item preprocessing select

* commit 'db313a7e94dba3b1d571086582433adaba5c46bc':
  ..F....... [ZBX-25509] fixed added element checking
  ..F....... [ZBX-25509] returned disable of the existing value option in preproc steps, modified changelog
  ..F....... [ZBX-25509] fixed z-select re-rendering after being sorted
  .......... [ZBX-25509] added changelog
  ..F....... [ZBX-25509] removed redundant parentheses
  ..F....... [ZBX-25509] removed functionality for disabling options in item preprocessing select

(cherry picked from commit 144fc9fd1febf183cc4193d754cb6c553ca4aca4)