fixup! dont use array_find_key. Only in php >= 8.4

Author: TheSyscall

library/Icinga/Web/Form/ConfigSectionForm.php

@@ -341,12 +341,19 @@ protected function addRequiredElements(): void
             $this->addSectionNameElement();
 
             $content = $this->getContent();
-            $index = array_find_key($content, function ($element) {
-                return $element->getName() === static::NAME_ELEMENT_NAME;
-            });
-            if ($index === false) {
+            $index = null;
+            foreach ($content as $key => $element) {
+                /** @var FormElement $element */
+                if ($element->getName() === static::NAME_ELEMENT_NAME) {
+                    $index = $key;
+                    break;
+                }
+            }
+
+            if ($index === null) {
                 throw new LogicException('Could not find section name element');
             }
+
             $element = $content[$index];
             unset($content[$index]);
             array_unshift($content, $element);