fix(events): point Messaging settings at suite defaults, not API keys

Mirror Care: suite platform keys count as ready for attendee email/SMS;
Account Messaging is primary, product Bird/SMS keys are advanced.
SmsService now prefers channel=suite before customer API keys.

app/Http/Controllers/Qr/IntegrationsController.php

@@ -19,6 +19,9 @@ class IntegrationsController extends Controller
         return view('qr.account.integrations', [
             'account' => $account,
             'credential' => $credentials->forOwner((string) $account->public_id),
+            'messagingSettingsUrl' => function_exists('ladill_account_url')
+                ? ladill_account_url('/account/settings/messaging')
+                : (string) config('smtp.messaging_settings_url', 'https://account.ladill.com/account/settings/messaging'),
         ]);
     }