ENGCOM-5443: Resolve 'Automatically Invoice All Items' is 'Yes' but no invoice is created (Zero Subtotal Checkout) #23688

 - Merge Pull Request #23688 from edenduong/magento2:2.3-bugfix/default_config_auto_create_invoice_issue23211
 - Merged commits:
   1. 9772075

Author: magento-engcom-team

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

@@ -42,6 +42,7 @@
             </cashondelivery>
             <free>
                 <group>offline</group>
+                <payment_action>authorize_capture</payment_action>
             </free>
         </payment>
     </default>