only run self-hosting update and telemetry scheduler when app_key is set

Author: Onatcer

app/Console/Kernel.php

@@ -22,7 +22,7 @@ protected function schedule(Schedule $schedule): void
             ->when(fn (): bool => config('scheduling.tasks.auth_send_mails_expiring_api_tokens'))
             ->everyTenMinutes();
 
-        if (config('scheduling.tasks.self_hosting_check_for_update') || config('scheduling.tasks.self_hosting_telemetry')) {
+        if (config('app.key') && (config('scheduling.tasks.self_hosting_check_for_update') || config('scheduling.tasks.self_hosting_telemetry'))) {
             // Convert string to a stable integer for seeding
             /** @var int $seed Take the first 8 hex chars → 32-bit int */
             $seed = hexdec(substr(hash('md5', config('app.key')), 0, 8));