fix(di): Register RectorConfig in container and set static instance

- Ensure singleton instance of RectorConfig
- Make RectorConfig accessible during bootstrap
- Call setInstance and bind RectorConfig::class to same instance
- Avoid missing or duplicate config when resolving services

Author: guanguans

src/DependencyInjection/LazyContainerFactory.php

@@ -405,6 +405,9 @@ public function create(): RectorConfig
     {
         $rectorConfig = new RectorConfig();
 
+        $rectorConfig::setInstance($rectorConfig);
+        $rectorConfig->instance(RectorConfig::class, $rectorConfig);
+
         $rectorConfig->import(__DIR__ . '/../../config/config.php');
 
         $rectorConfig->singleton(Application::class, static function (Container $container): Application {