[INTERNAL][FIX] m.DynamicPageHeader: tooltip for pin btn provided
[INTERNAL][FIX] m.DynamicPageHeader: tooltip for pin btn provided

BCP: 1680116955

- tooltip added
- aria-label text removed

Change-Id: I7d04ed8e455fa32fa374969329be01d89fbace8d

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