faet: update tests

Author: vladislavkeblysh

src/courseware/course/sequence/Sequence.test.jsx

@@ -103,11 +103,12 @@ describe('Sequence', () => {
       { store: testStore, wrapWithRouter: true },
     );
 
-    await waitFor(() => expect(screen.queryByText('Loading locked content messaging...')).toBeInTheDocument());
-    // `Previous`, `Next`, `Prerequisite` and `Close Tray` buttons.
-    expect(screen.getAllByRole('button').length).toEqual(4);
-    // `Active` button.
-    expect(screen.getAllByRole('tab').length).toEqual(1);
+    waitFor(() => {
+      expect(screen.queryByText('Loading locked content messaging...')).toBeInTheDocument();
+      // `Previous`, `Prerequisite` and `Close Tray` buttons.
+      expect(screen.getAllByRole('button').length).toEqual(3);
+      // `Next` button.
+      expect(screen.getAllByRole('link').length).toEqual(1);
 
       expect(screen.getByText('Content Locked')).toBeInTheDocument();
       const unitContainer = container.querySelector('.unit-container');