fix: Update import logic to skip combinations without EAN and adjust file size in sync cache

.vscode/ftp-kr.sync.cache.json

@@ -11786,9 +11786,9 @@
           },
           "import-product.php": {
             "type": "-",
-            "size": 31409,
-            "lmtime": 1749162646583,
-            "modified": true
+            "size": 32611,
+            "lmtime": 1749496748331,
+            "modified": false
           },
           "index.php": {
             "type": "-",

import-product.php

@@ -78,6 +78,9 @@ foreach ( $products_array as $product )
 
   foreach ( $product['combinations'] as $combination )
   {
+    if ( empty( $combination['ean'] ) )
+      continue;
+
     $sql_combination = 'UPDATE `' . _DB_PREFIX_ . 'product_attribute` SET `price` = ' . (float)$combination['price'] . ' WHERE `reference` = \'' . pSQL($combination['ean']) . '\'';
     $result_combination = Db::getInstance()->execute($sql_combination);