Compatibility with navigation module

Problem/Motivation

🐛 New translation: Cannot access offset of type string on string in Drupal\navigation\NavigationRenderer->getLocalTasks() Active is actually caused here by our page_to_pdf_menu_local_tasks_alter()

Steps to reproduce

Attempt to translate a node that has page to pdf enabled

Proposed resolution

Fix page_to_pdf_menu_local_tasks_alter()

Remaining tasks

MR

User interface changes

N/A

API changes

N/A

Data model changes

N/A