fix: overrides being used on regular phpunit

src/Bootstrappers/BootOverrides.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Bootstrappers;
+
+use Pest\Contracts\Bootstrapper;
+use Pest\Exceptions\ShouldNotHappen;
+
+/**
+ * @internal
+ */
+final class BootOverrides implements Bootstrapper
+{
+    /**
+     * The list of files to be overridden.
+     *
+     * @var array<int, string>
+     */
+    private const FILES = [
+        'Runner/Filter/NameFilterIterator.php',
+        'Runner/TestSuiteLoader.php',
+    ];
+
+    /**
+     * Boots the Subscribers.
+     */
+    public function boot(): void
+    {
+        foreach (self::FILES as $file) {
+            $file = __DIR__."/../../overrides/$file";
+
+            if (! file_exists($file)) {
+                throw ShouldNotHappen::fromMessage(sprintf('File [%s] does not exist.', $file));
+            }
+
+            require_once $file;
+        }
+    }
+}