Add support for dashboard theme change in UniversalWidget
Add support for dashboard theme change in UniversalWidget

lasanthaS/carbon-dashboards,ksdperera/carbon-dashboards,wso2/carbon-dashboards,ksdperera/carbon-dashboards,lasanthaS/carbon-dashboards,ksdperera/carbon-dashboards,dilini-muthumala/carbon-dashboards,lasanthaS/carbon-dashboards,dilini-muthumala/carbon-dashboards,wso2/carbon-dashboards,dilini-muthumala/carbon-dashboards