feat: improved button sizes in mobile view

templates/booking/create/step_1.html.twig

@@ -87,13 +87,7 @@
         </div>
         <div class="shrink-0 bg-primary-dark px-4 lg:px-8 py-2 lg:py-4 z-20">
             <div class="flex justify-between" hx-disinherit="*">
-                <button type="button"
-                        hx-get="{{ path('app_booking_cancel') }}"
-                        hx-target="body"
-                        hx-swap="beforeend"
-                        class="inline-flex items-center justify-center bg-gray-200 rounded-md w-10 h-10">
-                    <svg class="w-8 h-8" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256"><rect width="256" height="256" fill="none"/><line x1="200" y1="56" x2="56" y2="200" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="16"/><line x1="200" y1="200" x2="56" y2="56" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="16"/></svg>
-                </button>
+                {% include '_partials/_cancel_button.html.twig' %}
                 <button type="submit" class="button button--primary" {{ qa_attribute('btn-submit')}}>
                     Weiter zu Schritt 2
                 </button>