[INTERNAL][FIX] sap.m.MenuButton: Accessibility example page enhanced
[INTERNAL][FIX] sap.m.MenuButton: Accessibility example page enhanced

Change-Id: I05473e3350e4993f1cb036ffae20e80740bf3156
BCP: 1670321254

nzamani/openui5,cschuff/openui5,olirogers/openui5,SAP/openui5,nzamani/openui5,olirogers/openui5,nzamani/openui5,SAP/openui5,SQCLabs/openui5,SQCLabs/openui5,cschuff/openui5,SQCLabs/openui5,olirogers/openui5,cschuff/openui5,SAP/openui5,SAP/openui5