fix `pui-tabset` for optional active attribute
fix `pui-tabset` for optional active attribute

 - fixes console error

ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge,ermshiperete/web-languageforge