yoast_seo_entity_field_access vs PHP8.4: "explicit nullable type must be used instead"

Problem/Motivation

I'm not using the module, but https://www.drupal.org/forum/support/post-installation/2025-05-23/php-er... → says:

PHP Deprecated: yoast_seo_entity_field_access(): Implicitly marking parameter $items as nullable is deprecated, the explicit nullable type must be used instead in /home/******/public_html/modules/contrib/yoast_seo/yoast_seo.module on line 36

Proposed resolution

I didn't test this but I'll create an MR that might work. However, there are probably other changes needed that others will have to supply.