Zabbix

........S. [ZBX-21616] fixed error due to non-existent macros in custom expressions

Merge in ZBX/zabbix from feature/ZBX-21616-6.3 to master

* commit '1873100855685ae887206895a1e119b93d9905fe':
  ........S. [ZBX-21616] renamed define
  ........S. [ZBX-21616] fixed function description comment
  ........S. [ZBX-21616] got rid of ZBX_FALLTROUGH
  .......... [ZBX-21616] code style fix
  ........S. [ZBX-21616] fixed offseet calculation when replacing condition ids with values
  ........S. [ZBX-21616] added more optimizations to LLD filter processing
  ........S. [ZBX-21616] optimized
  .......... [ZBX-21616] added changelog
  .......... [ZBX-21616] added changelog
  ........S. [ZBX-21616] refactored and reimplemented parsing logics
  ........S. [ZBX-21616] fixed error due to non-existent macros in custom expressions