refactor(cart): own checkout item editing

app/Domains/Cart/Models/Cart.php

@@ -143,6 +143,7 @@ class Cart extends Model
         int $quantity,
         ?int $variantId = null,
         bool $updateVariant = false,
+        ?int $excludedPurchaseId = null,
     ): CartItem {
         if ($quantity <= 0) {
             throw ValidationException::withMessages([
@@ -155,6 +156,7 @@ class Cart extends Model
             $quantity,
             $variantId,
             $updateVariant,
+            $excludedPurchaseId,
         ): CartItem {
             /** @var CartItem $item */
             $item = $this->items()
@@ -182,6 +184,7 @@ class Cart extends Model
                 $this->assertUserPurchaseLimit(
                     $nextSelection,
                     $otherVariantsQuantity + $quantity,
+                    $excludedPurchaseId,
                 );
 
                 app(StockReservationService::class)->release($item, $currentSelection, $item->cantidad);
@@ -228,6 +231,7 @@ class Cart extends Model
                 $this->assertUserPurchaseLimit(
                     $currentSelection,
                     $otherVariantsQuantity + $quantity,
+                    $excludedPurchaseId,
                 );
             }
 
@@ -350,6 +354,7 @@ class Cart extends Model
     private function assertUserPurchaseLimit(
         CatalogItem|Variant $selectedItem,
         int $cartQuantity,
+        ?int $excludedPurchaseId = null,
     ): void {
         if ($this->user_id === null) {
             return;
@@ -363,6 +368,7 @@ class Cart extends Model
             $catalogItem,
             $this->user_id,
             $cartQuantity,
+            $excludedPurchaseId,
             field: 'cantidad',
         );
     }