[Task] Follow up native params and return type hints

[kingjia90]

Follow-up #13474

• PdfReactor processor
  

  pimcore/lib/Web2Print/Processor.php

  Line 153 in 8d831ba

  abstract protected function buildPdf(Document\PrintAbstract $document, object $config): string;

• Ecommerce Environment
  I see useGuestCart is nullable now, then it should be null like the other properties as well when clearing, also this change would be missing after merging Remove Ecommerce override demo#376
• this line got fixed by Blankse in the phpStan repo and could be removed again

  pimcore/lib/Image/Adapter/Imagick.php

  Line 328 in 631a520

  // @phpstan-ignore-next-line - phpstan expects bool, but actually doc says int

  - will be resolved with a follow up task: [Task]: Check for phpstan Release (>=1.9.3)  #13688

[github-actions]

Review Checklist

• Target branch (10.5 for bug fixes, others 11.x)
• Tests (if it's testable code, there should be a test for it - get help)
• Docs (every functionality needs to be documented, see here)
• Migration incl. install.sql (e.g. if the database schema changes, ...)
• Upgrade notes (deprecations, important information, migration hints, ...)
• Label
• Milestone