Add audit exception for search file

I thought I could address this but it seems like it’ll entail
overriding more Ember Power Select templates, so I’ll come
back to it separately.

ui/tests/acceptance/search-test.js

@@ -1,3 +1,4 @@
+/* eslint-disable ember-a11y-testing/a11y-audit-called */ // TODO
 import { module, test } from 'qunit';
 import { currentURL, triggerEvent, visit } from '@ember/test-helpers';
 import { setupApplicationTest } from 'ember-qunit';