revert test disablement

Author: matmair

src/backend/InvenTree/common/test_emails.py

@@ -89,8 +89,10 @@ def test_email_send_anymail(self):
         self.assertEqual(len(mail.outbox), 2)
         response = self.get(reverse('api-email-list'), expected_code=200)
         self.assertEqual(len(response.data), 2)
-        # self.assertEqual(response.data[1]['priority'], Priority.VERY_HIGH)
-        self.assertEqual(response.data[1]['headers']['X-My-Header'], 'my value')
+        self.assertEqual(response.data[1]['priority'], Priority.VERY_HIGH)
+        headers = response.data[1]['headers']
+        self.assertIn('X-My-Header', headers)
+        self.assertEqual(headers['X-My-Header'], 'my value')
 
     @override_settings(
         EMAIL_BACKEND='InvenTree.backends.InvenTreeMailLoggingBackend',