add suggested fix from copilot

Author: paulbalandan

system/Autoloader/Autoloader.php

@@ -93,6 +93,12 @@ class Autoloader
      */
     protected $helpers = ['url'];
 
+    /**
+     * Track if Composer namespaces have been loaded in this initialization.
+     * Resets on each initialize() call to allow tests to load Composer.
+     */
+    private bool $composerLoaded = false;
+
     public function __construct(private readonly string $composerPath = COMPOSER_PATH)
     {
     }
@@ -109,6 +115,8 @@ public function initialize(Autoload $config, Modules $modules)
         $this->classmap = [];
         $this->files    = [];
 
+        $this->composerLoaded = false;
+
         // We have to have one or the other, though we don't enforce the need
         // to have both present in order to work.
         if ($config->psr4 === [] && $config->classmap === []) {
@@ -146,13 +154,19 @@ private function loadComposerAutoloader(Modules $modules): void
             define('VENDORPATH', dirname($this->composerPath) . DIRECTORY_SEPARATOR);
         }
 
+        // Skip if already loaded in this initialization
+        if ($this->composerLoaded) {
+            return;
+        }
+
         /** @var ClassLoader $composer */
         $composer = include $this->composerPath;
 
         // Should we load through Composer's namespaces, also?
         if ($modules->discoverInComposer) {
             $composerPackages = $modules->composerPackages;
             $this->loadComposerNamespaces($composer, $composerPackages ?? []);
+            $this->composerLoaded = true;
         }
 
         unset($composer);
@@ -170,8 +184,8 @@ private function loadComposerAutoloader(Modules $modules): void
      */
     public function register()
     {
-        spl_autoload_register($this->loadClass(...), prepend: true);
         spl_autoload_register($this->loadClassmap(...), prepend: true);
+        spl_autoload_register($this->loadClass(...), prepend: true);
 
         foreach ($this->files as $file) {
             $this->includeFile($file);