Fix cart sign-in button in app-level template override

The cart app has its own _cart.html that overrides the shared one.
The shared copy was fixed but this one still had hx-get on the
cross-origin login link.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/_types/cart/_cart.html

@@ -217,23 +217,13 @@
           </form>
         {% else %}
           {% set href=login_url(request.url) %}
-          <div
-            class="w-full flex"
-          >
+          <div class="w-full flex">
             <a
               href="{{ href }}"
-              hx-get="{{ href }}"
-              hx-target="#main-panel"
-              hx-select ="{{hx_select_search}}"
-              hx-swap="outerHTML"
-              hx-push-url="true"
-              aria-selected="{{ 'true' if local_href == request.path else 'false' }}"
-              class="w-full cursor-pointer flex flex-row items-center justify-center p-3 gap-2 rounded bg-stone-200 text-black {{select_colours}}"
-              data-close-details
+              class="w-full cursor-pointer flex flex-row items-center justify-center p-3 gap-2 rounded bg-stone-200 text-black hover:bg-stone-300 transition"
             >
               <i class="fa-solid fa-key"></i>
               <span>sign in or register to checkout</span>
-
             </a>
           </div>