Use dependency injection in GinNavigation.php

This MR has phpcs errors, see https://git.drupalcode.org/issue/gin-3395897/-/jobs/207682

So moving back to needs work 👀

We should be good now.

I'm going to update this to the 4.0 branch.

I rebased the branch on 4.x, but I don't seem to be able to change the target branch in the MR; it is still pointing to 3.x. I apologize and hope someone will be able to fix it!

nicolasgraph → changed the visibility of the branch 8.x-3.x to hidden.

nicolasgraph → closed merge request !323

nicolasgraph → changed the visibility of the branch 3395897-use-dependency-injection to active.

nicolasgraph → reopened merge request !323

@benstallings, I changed the MR target branch but it seems there are some errors in the pipeline.
I let you check that and update the issue status once done.

@nicholasgraph, I'm not able to replicate the 500 error that gitlab's phpunit is experiencing. When I run phpunit locally, I get a different error about the database connection being refused. However, when I view my local environment in a browser, the patched gin theme works just fine (as does the database). So this may be out of my wheelhouse, I'm afraid.