Fix flaky tests

Author: eth3lbert

app/components/crate-sidebar.hbs

@@ -1,6 +1,7 @@
 <section
   local-class='sidebar'
   aria-label="Crate metadata"
+  data-test-id="crate-sidebar"
   ...attributes
 >
   <div local-class="metadata">

tests/acceptance/support-test.js

@@ -205,6 +205,8 @@ test detail
       };
 
       await visit('/crates/nanomsg');
+      assert.strictEqual(currentURL(), 'crates/nanomsg');
+      assert.dom('[data-test-id="crate-sidebar"]').exists();
       await click('[data-test-id="link-crate-report"]');
       assert.strictEqual(currentURL(), '/support?crate=nanomsg&inquire=crate-violation');
       assert.dom('[data-test-id="crate-input"]').hasValue('nanomsg');