Add new test case to hit SBA SPAR Dynamic active W channel

• Related issues: #1391 (closed)
• Requested reviewers: @tyagiri

Reason why this change is needed

Improve coverage of the ISAR module -> trigger the cases of dyn_active_w_flag == 0

Description of the change

Modification of the test vector to trigger uncovered functionality within the ISAR module.

Affected operating points

All test cases involving the modified test vector.