fix: restore room occupancy lost to case-sensitive xml attribute lookup

src/Form/RoomSelectType.php

@@ -24,12 +24,17 @@ class RoomSelectType extends AbstractType
                 $data = $event->getData();
                 $form = $event->getForm();
 
+                $choices = ['-' => 0];
+                if (0 < $data->maxQuantity) {
+                    $choices += array_combine(range(1, $data->maxQuantity), range(1, $data->maxQuantity));
+                }
+
                 $form->add('quantity', StepSelectChoiceType::class, [
                     'label' => false,
                     'required' => true,
                     'min_value' => 0,
                     'max_value' => $data->maxQuantity,
-                    'choices' => ['-' => 0] + array_combine(range(1, $data->maxQuantity), range(1, $data->maxQuantity)),
+                    'choices' => $choices,
                 ]);
             });
     }