Links without "original_link" are filtered by admin_toolbar_links_access_filter

Problem/Motivation

When trying to add local task to the admin toolbar, I ran into an issue that admin_toolbar_links_access_filter_filter_non_accessible_links() seems to filter out my local task because the "original_link" is not set. The original link seems to be used to retrieve the route name and route parameters.

Steps to reproduce

1) Create a menu based on a local task.
2) Log in as an authenticate user (not as admin or otherwise the menu will always be displayed)
3) See that the menu created is no displayed.

Proposed resolution

Since the route name and parameters are also available in the URL object, we could also try to retrieve them from the URL object for the item.

Remaining tasks

User interface changes

API changes

Data model changes