Factor in substitution type when building paths for suggested media items

Adding a patch.

Setting as needs review so tests are run.

The last submitted patch, 3: 3383865-2.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

Test failure is legit and expected. We would need to adapt the test.

A BC layer was added in https://www.drupal.org/project/linkit/issues/3354873 🐛 Direct URL to media file entity does not work because relative URL does not pass URL path validation Fixed , but this broke if using the newer APIs. I covered that in the PR, which includes the patch at #3 as the starting point.

The failure was because we had:

    // For media entities, check if standalone URLs are allowed. If not, then
    // strip '/edit' from the end of the canonical URL returned
    // by $entity->toUrl().

If standalone URLs are not allowed, I don't think we should be showing an url that would be a 404. So we actually should show the edit form, which is the canonical url in that case.