documentation

Pull request #2444: ZBX-25899 added an entry about the issue.

Merge in WEB/documentation from feature/ZBX-25899-7.2-D to release/7.2

* commit 'c0fdd1689f8bfde5e4b3776ecbb9940d7f4ec629':
  ZBX-25899 moved the note from the known issues page to the "Upgrade notes" and "Passive and active agent checks pages".
  ZBX-25899 clarified the entry.
  ZBX-25899 added an entry about the issue.