feat: replace custom discount with absolute value in favor of percentage

templates/admin/accommodation_booking/edit.html.twig

@@ -81,7 +81,7 @@
         </div>
         <div class="lg:col-span-2 grid lg:grid-cols-2 gap-y-4 lg:gap-x-8">
             {{ form_row(form.totalDiscountLabel) }}
-            {{ form_row(form.totalDiscount) }}
+            {{ form_row(form.totalDiscountAmount) }}
         </div>
         <div class="lg:col-span-2">
             {{ form_row(form.remarks) }}