fix tests

There was 1 failure:
1) Drupal\Tests\commerce_conditions_plus\FunctionalJavascript\PromotionWidgetTest::testWidget
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
             'depth' => 0
             'sort_weight' => '0'
             'negate_condition' => 0
+            'type' => 'total'
         )
     )
     1 => Array (
@@ @@
             'parent' => ''
             'depth' => 0
             'sort_weight' => '1'
-            'negate_condition' => 1
+            'negate_condition' => '1'
+            'type' => 'total'
         )
     )
 )
/builds/project/commerce_conditions_plus/tests/src/FunctionalJavascript/PromotionWidgetTest.php:78
FAILURES!
Tests: 6, Assertions: 126, Failures: 1.