FE: Added test code for changing default value notation of ConsumerGroups component

Author: K-Diger

frontend/src/components/ConsumerGroups/__test__/List.spec.tsx

@@ -2,7 +2,6 @@ import React from 'react';
 import { screen } from '@testing-library/react';
 import { render } from 'lib/testHelpers';
 import { useConsumerGroups } from 'lib/hooks/api/consumers';
-
 import List from 'components/ConsumerGroups/List';
 
 // Mock hooks