feat(portal): reuse unlock code for protected downloads

www/src/components/pages/EmployeePortal.astro

@@ -25,6 +25,7 @@ const serialized = payload ? JSON.stringify(payload).replaceAll('<', '\\u003c')
     <noscript><p>JavaScript is required to unlock the employee portal locally. Please contact AIA for access assistance.</p></noscript>
   </div>
   <div class="employee-portal__content" tabindex="-1" role="region" aria-label="Unlocked employee portal" hidden data-portal-content></div>
+  <p class="employee-portal__download-feedback" role="status" aria-live="polite" hidden data-portal-download-feedback></p>
   <script is:inline type="application/json" data-portal-payload set:html={serialized}></script>
 </section>
 
@@ -35,6 +36,7 @@ const serialized = payload ? JSON.stringify(payload).replaceAll('<', '\\u003c')
   input { background: #fcf9f5; border: 1px solid #edeef3; border-radius: 4px; font: inherit; padding: .65rem; max-width: 100%; min-width: 0; }
   input:focus-visible { outline: 3px solid var(--color-focus, #115bbd); outline-offset: 3px; }
   .employee-portal__content:focus { outline: none; }
+  .employee-portal__download-feedback { margin-block: 1rem; font-weight: 600; }
   [hidden] { display: none; }
   .employee-portal__content :global(a) { color: var(--color-primary); }
   .employee-portal__content :global(a:focus-visible) { outline: 3px solid var(--color-focus, #115bbd); outline-offset: 3px; }