[FIX] sap.m.IconTabHeader: sapUiResponsiveContentPadding corrected
[FIX] sap.m.IconTabHeader: sapUiResponsiveContentPadding corrected

Problem: When we use sap.m.IconTabHeader stand alone and apply the
sapUiResponsiveContentPadding class the control was not affected.

Change-Id: Ifccb648836faec0883dccf99c0dfe435d133cf61
BCP: 1970131364

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5