chore: restore vendor directory dependencies

vendor/nikic/php-parser/lib/PhpParser/Node/Expr/ArrayItem.php

@@ -0,0 +1,11 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node\Expr;
+
+require __DIR__ . '/../ArrayItem.php';
+
+if (false) {
+    // For classmap-authoritative support.
+    class ArrayItem extends \PhpParser\Node\ArrayItem {
+    }
+}