feat: disable PDF iframe navigation panel by default

Author: alan-w-u

src/pages/sponsors.astro

@@ -37,7 +37,7 @@ import { pastSponsors } from '../data/pastSponsors'
   <section id="want-to-sponsor-us" class="sponsor-us-box">
     <h1 class="page-title">Want to sponsor us?</h1>
     <p class="page-subtitle">Check out our sponsorship package for more information.</p>
-    <iframe src="/UBC_iGEM_2025_Sponsorship_Package.pdf#zoom=FitH" />
+    <iframe src="/UBC_iGEM_2025_Sponsorship_Package.pdf#zoom=FitH&navpanes=0" />
   </section>
 </Layout>