SiliconLabsGH-23: Add a User Code Get/Report sequence when using User…

… Code Set.

This allows to get confirmation of the User Code Set through Get Pin Code Response

Bug-SiliconLabs: UIC-3072
Signed-off-by: Thomas du Boisrouvray <thdubois@silabs.com>
Forwarded-SiliconLabs: thdubois/UIC-3072/c4/develop
(cherry picked from commit e7debde26fce76a30db3626a8c553348dfb877de)

applications/zpc/components/zwave_command_classes/src/zwave_command_class_user_code.c

@@ -670,6 +670,8 @@ static sl_status_t zwave_command_class_user_code_set(
     }
 
     *frame_length = 4 + user_code_size;
+    attribute_store_undefine_desired(user_code_node);
+    attribute_store_undefine_reported(user_code_node);
     return SL_STATUS_OK;
   }