Fix CS and remove unused argument

Author: 1ed

src/LiveComponent/src/LiveCollectionTrait.php

@@ -33,7 +33,7 @@ public function addCollectionItem(PropertyAccessorInterface $propertyAccessor, #
 
         $data = $propertyAccessor->getValue($this->formValues, $name);
 
-        if (!is_array($data)) {
+        if (!\is_array($data)) {
             $propertyAccessor->setValue($this->formValues, $name, []);
             $data = [];
         }

src/LiveComponent/src/Resources/views/form_theme.html.twig

@@ -10,7 +10,7 @@
         {% if button_add_prototype is defined and not button_add_prototype.rendered %}
             {{ form_row(button_add_prototype, { attr: button_add_prototype.vars.attr|merge({
                 'data-action': 'live#action',
-                'data-action-name': 'addCollectionItem(name=' ~ form.vars.full_name ~ ', index=' ~ (form.children is empty ? 0 : max(form.children|keys)) ~ ')'
+                'data-action-name': 'addCollectionItem(name=' ~ form.vars.full_name ~ ')'
             }) }) }}
         {% endif %}
     </div>