I'm attaching "Your Account" widget to show how native elements/translations etc. could be used in vue widgets (native widgets without any iframe, using skin elements, notification system etc.). You may change the text of the widget title in in user/widgets/WGT_PLUGINS_YOUR_ACCOUNT/template.html, you will also find "user/widgets/WGT_PLUGINS_YOUR_ACCOUNT/lang/lt.json" as an example for the single string to translate, you may remove word "Customized" from there, and default DA translation would cover it then, as it'd have it in translation strings.

Thank you!