Make Application@handle() meet Symfony 6's updated interface (#38413)

Add return type. This is a great use of our time.

Author: derekmd

src/Illuminate/Foundation/Application.php

@@ -22,6 +22,7 @@
 use Illuminate\Support\Str;
 use RuntimeException;
 use Symfony\Component\HttpFoundation\Request as SymfonyRequest;
+use Symfony\Component\HttpFoundation\Response as SymfonyResponse;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
@@ -959,7 +960,7 @@ protected function fireAppCallbacks(array $callbacks)
     /**
      * {@inheritdoc}
      */
-    public function handle(SymfonyRequest $request, int $type = self::MASTER_REQUEST, bool $catch = true)
+    public function handle(SymfonyRequest $request, int $type = self::MAIN_REQUEST, bool $catch = true): SymfonyResponse
     {
         return $this[HttpKernelContract::class]->handle(Request::createFromBase($request));
     }