[INTERNAL][FIX] sap.ui.layout.FixFlex: Title in test page is now corrected
[INTERNAL][FIX] sap.ui.layout.FixFlex: Title in test page is now corrected

Expected: The Header text displayed should be FixFlex in a Dialog.

Actual: The Header text displayed is FixFlex horizontal with ITB.

Change-Id: I7889a18fe3a3089ab7a742a0521a53a172cf294f
BCP: 1980193171

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