[MCP-584] Invert default Config value, edit description

Author: aa-kashk

app/code/Magento/Quote/Model/Config.php

@@ -11,7 +11,7 @@
 
 /**
  * Class Config
- * Toggles Inventory check via Config option
+ * Check if inventory check on quote items load is enabled
  * @package Magento\Quote\Model
  */
 class Config

app/code/Magento/Quote/etc/config.xml

@@ -9,7 +9,7 @@
     <default>
         <cataloginventory>
             <options>
-                <enable_inventory_check>0</enable_inventory_check>
+                <enable_inventory_check>1</enable_inventory_check>
             </options>
         </cataloginventory>
     </default>