Fix phpstan issue reported by CI pipeline

MR Raised

We can't just change this with the current compatibility scheme. This will only work going up from 10.3 and will break everything below I think.

@ggh I noticed your effort on fixing those things for a lot of modules. Note that this falls under the credit abuse policy as this is an task that can be automated. https://www.drupal.org/drupalorg/docs/marketplace/abuse-of-the-contribut... →