Zabbix

.......... [DEV-4842] added selected row count checks before and after deleting in multiple pages

Merge in ZBX/zabbix from feature/DEV-4842-7.4-2 to feature/ZBX-27392-7.4

* commit '492e7468095addb6c0f5209f569f97c946b082f4':
  .......... [DEV-4842] fixed type-o
  .......... [DEV-4842] fixed coding style issues in Selenium test
  .......... [DEV-4842] added message closing due to test instability, removed scenario dependent on potentially alternating data
  .......... [DEV-4842] added partial delete checks in multiple tests, asserting selected row count
  .......... [DEV-4842] added selected row count check after entity deletion