fix: add missing resource bundle key 'user/appmod.refresh_migrate_node'

Add the missing operation description for the migrate-to-azure node
refresh action to prevent MissingResourceException at runtime.

Author: wangmingliang-ms

Utils/azure-toolkit-ide-libs/azure-toolkit-ide-common-lib/src/main/resources/bundles/com/microsoft/azure/toolkit/operation.properties

@@ -1012,4 +1012,5 @@ internal/guidance.create_resource_group=create Resource Group
 internal/guidance.open_container_app_in_browser=open Container App in browser
 user/guidance.open_container_app_log_streaming=open Container App log streaming
 
-actions.common.deploy_to_azure=deploy to Azure
+actions.common.deploy_to_azure=deploy to Azure
+user/appmod.refresh_migrate_node=Refresh Migrate to Azure Node