Fixed issue if there are multiple skus in catalog rule condition combination.

Author: suneet64

app/code/Magento/Rule/Model/Condition/Product/AbstractProduct.php

@@ -520,6 +520,10 @@ public function loadArray($arr)
             ) ? $this->_localeFormat->getNumber(
                 $arr['is_value_parsed']
             ) : false;
+        } elseif (!empty($arr['operator']) && $arr['operator'] == '()') {
+            if (isset($arr['value'])) {
+                $arr['value'] = preg_replace('/\s*,\s*/', ',', $arr['value']);
+            }
         }
 
         return parent::loadArray($arr);