[INTERNAL] sap.m.Dialog: Make qUnits stable
[INTERNAL] sap.m.Dialog: Make qUnits stable

BCP: 2180144130
BCP: 2180167115
Change-Id: If405657e1d24a1896924affa08d70fe440068691

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