Restore test (#60)

This test was recently removed in #52 due to a change on that PR that
was since undone. It is still relevant, so it has been restored.

src/index.test.ts

@@ -74,6 +74,13 @@ describe('Phishing warning page', () => {
     expect(queryByText(container, 'Deceptive site ahead')).not.toBeNull();
   });
 
+  it('should have correct default "New issue" link', () => {
+    const newIssueLink = window.document.getElementById('new-issue-link');
+    expect(newIssueLink?.getAttribute('href')).toBe(
+      'https://github.com/metamask/eth-phishing-detect/issues/new',
+    );
+  });
+
   it('should correctly construct "New issue" link', async () => {
     window.document.location.href = getUrl(
       'example.com',