Zabbix

...G...... [ZBX-26477] fixed vfs.dir.get ignoring entries with 0 unixtime and fixed vfs.file.get having null values for time fields in this case

Merge in ZBX/zabbix from feature/ZBX-26477-7.3 to master

* commit 'd54d8c4c45642c9f20304b90fd242419af8e4345':
  ...G...... [ZBX-26477] removed nulls completely from vfs.dir.get
  ...G...... [ZBX-26477] small logics fix
  ...G...... [ZBX-26477] fixed vfs.dir.get ignoring entries with 0 unixtime
  ...G...... [ZBX-26477] fixed vfs.dir.get ignoring entries with 0 unixtime

(cherry picked from commit c85b7287e6e9a29940edba2d2ad0dab6ee249c83)