refactor(stock): make reservation expiration authoritative

app/Domains/Desfile/Services/InvitationPurchaseProvisioner.php

@@ -144,7 +144,6 @@ class InvitationPurchaseProvisioner
         if ($purchaseId !== null) {
             DB::table('compras')->where('id', $purchaseId)->update([
                 'status' => 'paid',
-                'expires_at' => null,
                 'total' => 0,
                 'updated_at' => $now,
             ]);
@@ -158,7 +157,6 @@ class InvitationPurchaseProvisioner
             'cart_id' => null,
             'status' => 'paid',
             'payment_method' => self::PAYMENT_METHOD,
-            'expires_at' => null,
             'total' => 0,
             'dni' => null,
             'transfer_payer_dni' => null,
@@ -396,7 +394,6 @@ class InvitationPurchaseProvisioner
         if ($reservationId === null) {
             $reservationId = DB::table('stock_reservations')->insertGetId([
                 'status' => 'committed',
-                'expires_at' => null,
                 'committed_at' => $now,
                 'released_at' => null,
                 'expired_at' => null,