Since PHP 8.4 implicitly nullable parameter types are deprecated.
Normalize scoped PHPDoc for nullable-parameter updates: use `?Type` instead of
`Type|null` and remove column alignment.
Co-authored-by: "Eric Lippmann <eric.lippmann@icinga.com>"
Previously, command forms were responsible for this. But they
don't have any notion of fallback handling and are unable to
ensure proper re-submission of failed batches.
