fix: external library is only for verified contract

apps/block_scout_web/lib/block_scout_web/templates/address_contract/index.html.eex

@@ -109,6 +109,7 @@
         <% end %>
       </section>
 
+      <%= if BlockScoutWeb.AddressView.smart_contract_verified?(@address) do %>
         <%= if @address.smart_contract.external_libraries && @address.smart_contract.external_libraries != [] do %>
           <section>
             <div class="d-flex justify-content-between align-items-baseline">
@@ -120,7 +121,7 @@
             </div>
           </section>
         <% end %>
-
+      <% end %>
     </div>
   </div>
 </section>