feat(integration): add requires_tenant_configuration field and update related logic and tests

app/Domains/Integration/Services/BaseIntegrationService.php

@@ -94,7 +94,7 @@ abstract class BaseIntegrationService
             ->where('integration_code', $this->integrationCode)
             ->first();
 
-        if (!$this->tenantIntegration) {
+        if (!$this->tenantIntegration && $this->integration->requires_tenant_configuration) {
             throw new Exception("Tenant '{$this->tenantCode}' does not have integration '{$this->integrationCode}' configured.");
         }
     }

app/Domains/Integration/Services/MailService.php

@@ -29,6 +29,8 @@ class MailService extends BaseIntegrationService
 
     private ?Tenant $tenant = null;
 
+    private bool $usesTenantMailer = false;
+
     public function __construct(?MailFactory $mailFactory = null)
     {
         $this->mailFactory = $mailFactory ?? app(MailFactory::class);
@@ -41,7 +43,14 @@ class MailService extends BaseIntegrationService
         $this->tenant = Tenant::query()
             ->where('codigo', $tenantCode)
             ->firstOrFail();
-        $this->mailer = $this->resolveMailer();
+
+        if ($this->tenantIntegration) {
+            $this->mailer = $this->resolveMailer();
+            $this->usesTenantMailer = true;
+        } else {
+            $this->mailer = $this->mailFactory->mailer();
+            $this->usesTenantMailer = false;
+        }
 
         return $this;
     }
@@ -82,7 +91,9 @@ class MailService extends BaseIntegrationService
 
     public function mailerName(): string
     {
-        return 'tenant-smtp';
+        return $this->usesTenantMailer
+            ? 'tenant-smtp'
+            : (string) config('mail.default');
     }
 
     public function onSetup(): void