Add simple test for FormActions

app/soapbox/components/ui/form-actions/__tests__/form-actions.test.tsx

@@ -0,0 +1,12 @@
+import React from 'react';
+
+import { render, screen } from '../../../../jest/test-helpers';
+import FormActions from '../form-actions';
+
+describe('<FormActions />', () => {
+  it('renders successfully', () => {
+    render(<FormActions><div data-testid='child'>child</div></FormActions>);
+
+    expect(screen.getByTestId('child')).toBeInTheDocument();
+  });
+});