fix: remove storybook:generate-preview command

Author: jon-ht

src/Command/GeneratePreviewCommand.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Storybook\Tests\Functional\Controller;
+
+use Storybook\Tests\StoryTestTrait;
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
+use Symfony\Component\DomCrawler\Crawler;
+
+class StorybookPreviewControllerTest extends WebTestCase
+{
+    use StoryTestTrait;
+
+    public function testPreview()
+    {
+        $client = static::createClient();
+        $client->request('GET', '_storybook/preview');
+
+        $this->assertResponseIsSuccessful();
+
+        // Check that the preview contains the basic HTML structure
+        $this->assertSelectorExists('html');
+        $this->assertSelectorExists('head');
+        $this->assertSelectorExists('body');
+    }
+}