Token [node:menu-link:parent-alias] does not handle hardcoded internal urls that redirects to another page

I updated the token to support hardcoded urls. The automatically created redirect, after the url alias change, takes care of the "Page 2" link in the breadcrumb.

I also had to update the token to be regarded as safe by pathauto, as is done in the kernel test PathAliasUpdateTest. I added this in a hook_update_N.

There are a few issues:

1. $langcode is not needed to be defined for non route url.
2. $url->toString() will return full path with fragment and query. We only need url.
3. If possible we need to lookup for existing redirect to get correct url alias. Otherwise, breadcrumbs will not pick up the page that has changed alias but not in a menu item

Automatically closed - issue fixed for 2 weeks with no activity.