Zabbix

..F....... [ZBX-26481] fixed parameter trimming in item preprocessing steps

* commit '4ad4f6e9172ed1683383cf6b09e29843a4db8864':
  .......... [ZBX-26481] fixed wrong brackets in test case with multiline value
  .......... [ZBX-26481] added check for trimming trailing and leading spaces for preprocessing steps fixed in this task
  .......... [ZBX-26481] fixed selenium tests and added javascript negative scenarios
  ..F....... [ZBX-26481] updated changelog
  ..F....... [ZBX-25913] fixed parameter trimming in item preprocessing steps #2
  ..F....... [ZBX-25913] fixed parameter trimming in item preprocessing steps
  ..F....... [ZBX-26481] fixed "JavaScript" preprocessing step to disallow saving with only whitespaces or newlines

(cherry picked from commit d9efc0c4bfa6cf99523b631456f79b22877d1c38)