return usage_per_version adus as list to preserve order (#21066)

* return usage_per_version adus as list to preserve order

* prettier fix

src/olympia/reviewers/tests/test_views.py

@@ -8454,7 +8454,7 @@ class TestUsagePerVersion(ReviewerTest):
 
         get_adu_per_version_mock.assert_called_once_with(self.addon)
         assert response.status_code == 200
-        assert response.json() == {}
+        assert response.json() == {'adus': []}
 
     @mock.patch(
         'olympia.reviewers.views.get_average_daily_users_per_version_from_bigquery'
@@ -8468,7 +8468,9 @@ class TestUsagePerVersion(ReviewerTest):
         response = self.client.get(self.url)
 
         assert response.status_code == 200
-        assert response.json() == {'1.1': '394', '2': '450', '3.4545': '9,999'}
+        assert response.json() == {
+            'adus': [['1.1', '394'], ['2', '450'], ['3.4545', '9,999']]
+        }
 
     def test_not_reviewer(self):
         user_factory(email='irregular@mozilla.com')

src/olympia/reviewers/views.py

@@ -1528,7 +1528,7 @@ class ReviewAddonVersionCompareViewSet(
 def usage_per_version(request, addon):
     versions_avg = get_average_daily_users_per_version_from_bigquery(addon)
     response = JsonResponse(
-        {version: numberfmt(adu) for (version, adu) in versions_avg}
+        {'adus': [[version, numberfmt(adu)] for (version, adu) in versions_avg]}
     )
     patch_cache_control(response, max_age=5 * 60)
     return response

static/js/zamboni/reviewers.js

@@ -544,9 +544,15 @@ function initVersionsADU() {
   function loadVersionsADU() {
     const aduUrl = $('#addon').data('versions-adu-url');
     $.get(aduUrl, function (data) {
-      const versionAduPairs = Object.entries(data);
+      const versionAduPairs = data.adus;
+      if (versionAduPairs !== undefined) {
         fillVersionsTable(versionAduPairs);
         fillTopTenBox(versionAduPairs);
+      } else {
+        $('#version-adu-top-ten div').append(
+          'No average daily user values because BigQuery disabled.',
+        );
+      }
     });
   }
   loadVersionsADU();