Generate URL instead of just alias for :url token

Problem/Motivation

The :url token only returns the node alias, thus ignoring i.e. the language prefix.

Steps to reproduce

On a multilingual site, using the :url token and check the result.

Proposed resolution

Instead of

\Drupal::service('path_alias.manager')->getAliasByPath('/node/' . $nid);

Use

Url::fromRoute('entity.node.canonical', ['node' => $nid]);

Remaining tasks

Review the patch.

User interface changes

None.

API changes

None.

Data model changes

None.