Fake Torchlight in docs prerelease tests to fix CI

The prerelease docs tests render pages containing fenced code blocks.
Torchlight throws when no token is configured (as in CI), and because
the CommonMark converter is a shared static singleton, that failure
cascaded into unrelated tests (heading renderer, docs meta, support
tickets). Configure a fake token and fake the Torchlight API in setUp,
matching TorchlightCodeBlockTest, so the pages render offline.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: simonhamp

tests/Feature/DocsPrereleaseVersionTest.php

@@ -4,12 +4,27 @@
 
 use App\Services\DocsVersionService;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Http;
 use Tests\TestCase;
 
 class DocsPrereleaseVersionTest extends TestCase
 {
     use RefreshDatabase;
 
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // These tests render full docs pages that contain fenced code blocks.
+        // Torchlight throws outside production when no token is configured (as
+        // in CI), so give it a token and fake the API to force its offline
+        // fallback — the pages render deterministically without a real token.
+        config(['torchlight.token' => 'test-token']);
+        Http::fake([
+            '*' => Http::response(['blocks' => []], 200),
+        ]);
+    }
+
     public function test_prerelease_pages_show_the_beta_notice(): void
     {
         $response = $this->get('/docs/mobile/4/edge-components/button');