Rename ArtifactControllerTest to ApiArtifactControllerTest
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3580310. -->
Reported by: [longwave](https://www.drupal.org/user/246492)
Related to !761
>>>
<h3 id="overview">Overview</h3>
<p>ArtifactController was renamed to ApiArtifactController late in development of <span class="drupalorg-gitlab-issue-link drupalorg-gitlab-link-wrapper"><a href="https://git.drupalcode.org/project/canvas/-/work_items/3571536" class="drupalorg-gitlab-link">https://git.drupalcode.org/project/canvas/-/work_items/3571536</a></span> but the test was not renamed to match.</p>
<h3 id="proposed-resolution">Proposed resolution</h3>
<p>Rename the test.</p>
<h3 id="ui-changes">User interface changes</h3>
issue