deprecated implicit nullable parameter layout_paragraphs

[finnlewis]

Still seeing this:

Exception: Deprecated function: Drupal\layout_paragraphs\Access\LayoutParagraphsBuilderAccess::access(): Implicitly marking parameter $operation as nullable is deprecated, the explicit nullable type must be used instead

https://github.com/localgovdrupal/localgov/actions/runs/18132064725/job/51601309108#step:5:43

See https://www.drupal.org/project/layout_paragraphs/issues/3502083 and https://www.drupal.org/project/layout_paragraphs/issues/3538066