fix: schedule:test on commands using runInBackground

[dallyger]

Force to run the selected command in the foreground.

The artisan schedule:test command exited immediately after invocation and the selected command did not start if it uses ->runInBackground(). If ->withoutOverlapping() is used too, the mutex would not be removed and blocks any further execution without any user facing notice.

How to Reproduce

composer create-project <dir>
cd <dir
php artisan make:command TestCommand

Edit app/Console/Commands/TestCommand.php

     public function handle()
     {
-        //
+        Log::info("running");
     }

Edit bootstrap/app.php

+use App\Console\Commands\TestCommand;
+use Illuminate\Console\Scheduling\Schedule;
+
 return Application::configure(basePath: dirname(__DIR__))
+    ->withSchedule(function (Schedule $schedule) {
+        $schedule->command(TestCommand::class)
+            ->everyMinute()
+            ->runInBackground()
+            ->withoutOverlapping();
+    })

Observe logs: tail -f storage/logs/laravel.log

Run the scheduled command: php artisan schedule:test
Compare against: php artisan schedule:work